Method for dyeing keratinous materials, comprising application of an organosilicon compound, a dyeing compound, a sealing agent and an alkaline pretreatment agent

Abstract

The present invention relates to a method for dyeing keratinous materials, in particular human hair, comprising the following steps: applying an agent (v) to the keratinous material, said agent (v) comprising (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol, (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to the keratinous material, said agent (a) comprising (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms; and applying an agent (b) to the keratinous material, said agent (b) comprising (b1) at least one sealing agent, wherein at least one of said agents (a) and (b) further comprises at least one dyeing compound from the group comprising pigments and / or direct dyes.

Description

[Technical field]

[0001] The subject of the present application is a method for treating keratinous materials, in particular human hair, which comprises the application of two agents (a) and (b) and an alkaline pretreatment agent. Agent (a) is characterized by the inclusion of at least one organosilicon compound (a1). Agent (b) comprises at least one sealing agent (b1). Furthermore, either agent (a) or agent (b), or both agents (a) and (b), comprise at least one dyeing compound from the group of pigments and / or direct dyes.

[0002] Another subject of the present application is a multi-component packaged unit (kit-of-parts) for dyeing keratinous materials, in particular human hair, comprising at least three agents (a'), (a'') and (b) packaged separately from one another, and one pretreatment agent (v). The agent (a) used in the above method can be prepared from agent (a') and agent (a'').

[0003] Yet another subject of the present application is a multi-component packaged unit (kit-of-parts) for dyeing keratinous materials, in particular human hair, comprising at least four agents (a'), (a'', (a''',) and (b) packaged separately from one another and one pretreatment agent (v). The agent (a) used in the above method can be prepared from agents (a'), (a'') and (a'''). [Background technology]

[0004] Changing the shape and color of keratin fibers, especially human hair, is an important area of ​​modern cosmetics. Those skilled in the art know various coloring systems for changing the color of hair, depending on the coloring requirements. Oxidation dyes are generally used for permanent and strong dyeing, with high fastness and good coverage of gray. Such dyes typically contain oxidation dye precursors (known as developer and coupler components), which form the actual dye under the influence of an oxidizing agent, such as hydrogen peroxide. Oxidation dyes are characterized by a very long-lasting color finish.

[0005] When using direct dyes, the already formed dye diffuses from the coloring agent into the hair fiber. Compared to oxidative coloring, the color obtained with direct dyes is less durable and washes out faster. The color from direct dyes usually remains in the hair for 5 to 20 washes.

[0006] The use of color pigments to change the color of hair and / or skin for a short time is known. Color pigments are generally understood to mean insoluble coloring substances. They are present in the color preparation undissolved in the form of small particles and simply deposit externally on the hair fiber and / or on the skin surface. They can therefore generally be removed again without residues by washing several times with a surfactant-containing cleanser. Products of this type go by the name hair mascara and are available in a variety of varieties on the market.

[0007] If users want a particularly long-lasting coloring, the use of oxidative coloring agents has been the only option up to now. However, despite numerous optimization attempts, the unpleasant ammonia or amine odor cannot be completely avoided in oxidative hair dyes. The residual hair damage associated with the use of oxidative coloring agents also has a detrimental effect on users' hair.

[0008] EP 2168633 B1 addresses the problem of producing long-lasting hair dyes using pigments. The document teaches that a combination of pigments, organosilicon compounds, film-forming polymers and solvents can be applied to hair to produce colorations that are particularly resistant to rubbing and / or shampooing. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] European Patent No. 2168633 Summary of the Invention [Problem to be solved by the invention]

[0010] There is a need to provide hair dyes containing pigments which, on the one hand, do not adversely affect high wash fastness and rub fastness, and, on the other hand, do not adversely affect hair properties such as manageability and feel. To this end, it would be desirable to obtain an intense coloration by a good and uniform coating of the pigment on the keratin material.

[0011] The object of the present invention was therefore to provide a pigmented dyeing system with fastness properties comparable to those of oxidation dyeing. In particular, the wash fastness properties must be excellent, but the use of oxidation dye precursors normally used for this purpose should be avoided. In particular, a uniform and long-lasting coloration must also be achieved. [Means for solving the problem]

[0012] Surprisingly, it has been found that the above-mentioned object can be successfully solved when keratinous materials, particularly human hair, are dyed using a method in which an alkaline pretreatment agent (v) is first applied to the keratinous material (hair), and then at least two agents (a) and (b). In this case, the first agent (a) comprises at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms. The second agent (b) comprises at least one sealing agent. Furthermore, either agent (a) or agent (b), or both agents (a) and (b), comprise at least one dyeing compound from the group of pigments and / or direct dyes.

[0013] When the above three agents (v), (a) and (b) were used in a dyeing method, it was possible to dye keratinous materials with particularly high color strength and high color fastness.

[0014] By pretreating the keratinous material with an alkaline pretreatment agent, a surprisingly uniform and durable coating with at least one dye compound has been achieved. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The first subject of the present invention is a process for producing a method for the preparation of a pharmaceutical composition comprising the steps of: applying an agent (v) to the keratin material, said agent (v) (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent Contains; A step of applying an agent (a) to a keratin material, said agent (a) being (a1) at least one organosilicon compound from the group of silanes containing 1, 2 or 3 silicon atoms; Contains; applying an agent (b) to the keratin material, said agent (b) (b1) at least one sealing agent A method for dyeing keratinous materials, in particular human hair, comprising: wherein at least one of said agents (a) and (b) further comprises at least one dyeing compound from the group consisting of pigments and / or direct dyes.

[0016] In the research leading to the present invention, it has been found that by applying agents (a) and (b), preferably successively, it is possible to form very stable and wash-fast colorings on keratinous materials. The use of organosilicon compound (a1) forms a particularly resistant film on keratinous materials. The application of second agent (b) seals the film applied to the keratinous materials, making it even more resistant to washing and / or abrasion. By using at least one dyeing compound from the group of pigments and / or direct dyes in at least one of agents (a) and (b), a colored film can be obtained.

[0017] In this way, the dye compounds can be durably fixed on the keratin materials, so that very wash-resistant colorations with good resistance to rubbing and / or shampooing can be obtained.

[0018] With the aid of the alkaline pretreatment agent, the adhesion can be significantly improved, and therefore the durability of the film formed on the keratinous material can be improved. The alkaline pretreatment agent is presumed to remove the fatty acid 18-methyleicosanoic acid, which is covalently bound to the cuticle surface of the keratinous material via an ester or thioester bond. The cleavage of the ester or thioester bond and the removal of the covalently bound 18-methyleicosanoic acid makes the keratinous material hydrophilic and creates additional reactive sites on the surface of the keratinous material. The additional reactive sites on the surface of the keratinous material can, in particular, be negatively charged. The organosilicon compound (a1) and / or its condensation products and / or hydrolysis products can interact with the negative charges.

[0019] Keratin Substances Keratinous materials are understood to mean hair, skin, nails (for example fingernails and / or toenails). Furthermore, wool, fur and feathers also fall within the definition of keratinous materials.

[0020] Preferably, keratinous materials are understood to mean human hair, human skin and human nails, in particular fingernails and toenails. Very preferably, keratinous materials are understood to mean human hair.

[0021] Pretreatment agent (v) Within the described method, the alkaline pretreatment agent (v) is first applied to keratinous materials, in particular human hair.

[0022] The pretreatment agent (v) is characterized by containing at least one polyethylene glycol (v1) having an average molecular weight of 200 to 8000 g / mol, at least one aliphatic alcohol (v2), and at least one alkalizing agent (v3).

[0023] The alkaline pretreatment agent (v) used in the dyeing method contains, as the essential component (v1) of the present invention, at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol.

[0024] It has been found that the presence of polyethylene glycol (v1) in agent (v) enhances the ability of agent (v) to distribute on keratinous fibers and thus allows a particularly effective and uniform removal of covalently bound 18-methyleicosanoic acid from the surface of keratinous materials.

[0025] Polyethylene glycol (PEG) has the general molecular formula C 2n H 4n+2 O n+1 and depending on the chain length, they are liquid, pasty, or solid polymers.

[0026] Polyethylene glycol with an average molecular weight of 200-400 g / mol is liquid, polyethylene glycol with an average molecular weight >400-600 g / mol is pasty, and polyethylene glycol with an average molecular weight ≥1000 g / mol is solid.

[0027] In a very particularly preferred embodiment, the agent (v) used in the present method comprises a polyethylene glycol (v1) having an average molecular weight of 200 to 8000 g / mol, a polyethylene glycol having an average molecular weight of 400 g / mol.

[0028] In a further particularly preferred embodiment, the agent (v) used in the method comprises at least two polyethylene glycols (v1) having an average molecular weight of 200 to 8000 g / mol. In this embodiment, the agent (v) used in the method preferably comprises a first polyethylene glycol having an average molecular weight of 400 g / mol and a second polyethylene glycol having an average molecular weight of 6000 g / mol.

[0029] The alkaline pretreatment agent (v) used in the dyeing process as the second component (v2) essential to the present invention comprises at least one aliphatic alcohol.

[0030] In particular, the fatty alcohol is a linear or branched, saturated or unsaturated alcohol having 1 to 22 carbon atoms and 0, 1, 2 or 3 double bonds. Typical representatives are, for example, methanol, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, tert-butanol, n-pentanol, caproic alcohol, capryl alcohol, 2-ethylhexanol, capric alcohol, myristyl alcohol, lauryl alcohol, cetyl alcohol, palmitoleic alcohol, stearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, linolyl alcohol, linolenyl alcohol, behenyl alcohol or erucyl alcohol. The fatty alcohol is preferably a linear or branched, saturated alcohol having 1 to 6 carbon atoms, preferably selected from the group consisting of ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, tert-butanol and mixtures thereof. The fatty alcohol very particularly preferably comprises ethanol.

[0031] As the third component (v3) essential to the present invention, the alkaline pretreatment agent (v) applied in the dyeing method comprises at least one alkalizing agent.

[0032] Suitable alkalizing agents include, inter alia, alkali metal hydroxides, alkaline earth metal hydroxides, basic amino acids and / or amines.

[0033] It has been found that the more nucleophilic the alkalizing agent, the more effective it is at cleaving the ester or thioester bond and removing the covalently bound 18-methyleicosanoic acid. Anionic nucleophiles are particularly effective alkalizing agents.

[0034] In a preferred embodiment of this method, said pretreatment agent (v) comprises at least one alkalizing reagent (v3) comprising an alkali hydroxide.

[0035] An alkali hydroxide is a type of compound consisting of an alkali metal cation and a hydroxide anion. Alkali hydroxides are lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide, and cesium hydroxide. Most preferably, at least one alkali hydroxide comprises potassium hydroxide.

[0036] In a preferred embodiment of this method, said pretreatment agent (v) comprises at least one alkalizing reagent (v3) comprising potassium hydroxide.

[0037] In a highly preferred embodiment of this method, the pretreatment agent (v) is (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol, including a polyethylene glycol having an average molecular weight of 400 g / mol; (v2) at least one aliphatic alcohol, including ethanol; and (v3) at least one alkalizing agent containing potassium hydroxide Includes.

[0038] In a very particularly preferred embodiment of the method, the pretreatment agent (v) comprises 40 to 80% by weight, more preferably 45 to 75% by weight and very particularly preferably 50 to 70% by weight of at least one polyethylene glycol (v1) having an average molecular weight between 200 and 8000, in each case based on the total weight of the pretreatment agent (v).

[0039] Likewise, in a very particularly preferred embodiment of the process, the pretreatment agent (v) comprises 10 to 50% by weight, more preferably 15 to 45% by weight and very particularly preferably 20 to 40% by weight of at least one aliphatic alcohol (v2), in each case based on the total weight of the pretreatment agent (v).

[0040] In another very particularly preferred embodiment of the method, the pretreatment agent (v) comprises 0.5 to 5% by weight, more preferably 0.75 to 2% by weight and very particularly preferably 1 to 1.5% by weight of at least one alkalizing agent (v3), in each case based on the total weight of the pretreatment agent (v).

[0041] The alkalizing agent, in the form of an alkali hydroxide, is typically used in the form of an aqueous solution.

[0042] Therefore, according to a further preferred embodiment of the method, said pretreatment agent (v) further comprises water.

[0043] According to a preferred embodiment of the present method, the pretreatment agent (v) contains 0.5 to 10% by weight of water based on the total weight of the pretreatment agent (v).

[0044] In a highly preferred embodiment of the method, the pretreatment agent (v) is (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol, containing polyethylene glycol having an average molecular weight of 400 g / mol, in an amount of 50 to 70% by weight based on the total weight of the pretreatment agent (v); (v2) 10 to 50% by weight, based on the total weight of the pretreatment agent (v), of at least one aliphatic alcohol, including ethanol; and (v3) 0.5 to 5% by weight, based on the total weight of the pretreatment agent (v), of at least one alkalizing agent comprising potassium hydroxide; and 0.5 to 10% by weight of water based on the total weight of the pretreatment agent (v) Includes.

[0045] Agents (a) and (b) In the context of the described method, the agents (a) and (b) are applied to keratinous materials, in particular human hair, after said pretreatment agent (v). The two agents (a) and (b) are different from each other.

[0046] Agent (a) Agent (a) preferably comprises the essential component (a1) of the present invention in a cosmetic carrier, particularly preferably in an aqueous or aqueous alcoholic cosmetic carrier. This cosmetic carrier can be in the form of a liquid, gel or cream. Pasty, solid or powdery cosmetic carriers can also be used to prepare agent (a). For the purpose of hair treatment, particularly hair dyeing, such carriers are, for example, creams, emulsions, gels or other surfactant-containing foaming solutions, such as shampoos, foam aerosols, foam formulations or other preparations suitable for application to hair.

[0047] Preferably, the cosmetic carrier comprises at least 2% by weight of water relative to its weight. More preferably, the water content is more than 10% by weight, even more preferably more than 20% by weight, particularly preferably more than 40% by weight. The cosmetic carrier may be hydroalcoholic. Within the meaning of the present invention, a hydroalcoholic solution is an aqueous solution comprising 2-70% by weight of a C1-C4 alcohol, in particular ethanol or isopropanol. The agent may further contain further organic solvents, such as, for example, methoxybutanol, benzyl alcohol, ethyl diglycol or 1,2-propylene glycol. Thus, all water-soluble organic solvents are preferred.

[0048] Organosilicon compounds from the group of silanes (a1) As essential component (a1) of the present invention, the agent (a) comprises at least one organosilicon compound from the group of the silanes having 1, 2 or 3 silicon atoms.

[0049] Particularly preferably, the agent (a) comprises at least one organosilicon compound (a1) selected from silanes having 1, 2 or 3 silicon atoms, said organosilicon compound comprising one or more hydroxyl and / or hydrolyzable groups per molecule.

[0050] The organosilicon compound (a1) or organosilane in agent (a) is a reactive compound.

[0051] Organosilicon compounds, also known as organosilicon compounds, are compounds that either have a direct silicon-carbon bond (Si-C) or carbon is bonded to a silicon atom via an oxygen, nitrogen or sulfur atom.The organosilicon compounds according to the present invention are compounds that contain 1 to 3 silicon atoms.The organosilicon compounds particularly preferably contain 1 or 2 silicon atoms.

[0052] According to the IUPAC nomenclature, the term "silane" refers to a group of compounds based on a silicon skeleton and hydrogen. In organosilanes, the hydrogen atoms are fully or partially replaced by organic groups such as (substituted) alkyl and / or alkoxy groups. In organosilanes, some hydrogen atoms may be replaced by hydroxyl groups.

[0053] In the context of a particularly preferred embodiment, the method is characterized in that an agent (a) is applied to the keratin material, said agent (a) comprising at least one organosilicon compound (a1) selected from silanes containing one, two or three silicon atoms, the organosilicon compound comprising one or more hydroxyl or hydrolyzable groups per molecule.

[0054] In the context of a very particularly preferred embodiment, the method is characterized in that an agent (a) is applied to the keratin material, said agent (a) comprising at least one organosilicon compound (a1) selected from silanes having one, two or three silicon atoms, which organosilicon compound comprises one or more basic chemical functional groups and one or more hydroxyl or hydrolyzable groups per molecule.

[0055] The basic group or basic chemical functionality may be, for example, an amino group, an alkylamino group, a dialkylamino group, or a trialkylamino group, which is preferably attached to the silicon atom via a linker. The basic group is preferably an amino group, a C1-C6 alkylamino group, or a di(C1-C6) alkylamino group.

[0056] The hydrolyzable group is preferably a C1-C6 alkoxy group, in particular an ethoxy group or a methoxy group. It is preferred if the hydrolyzable group is directly bonded to the silicon atom. For example, if the hydrolyzable group is an ethoxy group, the organosilicon compound preferably comprises the structural unit R'R''R'''Si-O-CH2-CH3. The R', R''R''' functional groups here represent the three remaining free valences of the silicon atom.

[0057] A very particularly preferred method is characterized in that the agent (a) comprises at least one organosilicon compound selected from silanes having one, two or three silicon atoms, said organosilicon compound preferably comprising one or more basic chemical functions and one or more hydroxyl groups or hydrolyzable groups per molecule.

[0058] Excellent results have been obtained when the agent (a) comprises at least one organosilicon compound (a1) of formula (I) and / or (II).

[0059] The compounds of formulas (I) and (II) are organosilicon compounds selected from silanes having one, two or three silicon atoms, said organosilicon compounds containing one or more hydroxyl and / or hydrolyzable groups per molecule.

[0060] In a further particularly preferred embodiment, the method is characterized in that an agent is applied to the keratin material (or human hair), wherein the agent (a) is a compound of formula (I): [ka] [In the formula, R1 and R2, independently of one another, represent a hydrogen atom or a C1-C6 alkyl group; L is a linear or branched divalent C1-C 20 represents an alkylene group, R3 represents a hydrogen atom or a C1-C6 alkyl group; R4 represents a C1-C6 alkyl group; a represents an integer from 1 to 3, b represents an integer equal to 3-a. And / or (II): [ka] [In the formula, R5, R5' and R5'' are each independently a hydrogen atom or a C1-C6 alkyl group; R6, R6' and R6'' are each independently a C1-C6 alkyl group; A, A', A'', A''' and A'''' are, independently of one another, linear or branched divalent C1-C 20 represents an alkylene group, R7 and R8 are each independently a hydrogen atom, a C1-C6 alkyl group, a hydroxy C1-C6 alkyl group, a C2-C6 alkenyl group, an amino C1-C6 alkyl group or a group of formula (III): [ka] Represents the base of c represents an integer from 1 to 3, d represents the integer 3-c, c' represents an integer from 1 to 3, d' represents the integer 3-c', c'' represents an integer from 1 to 3, d'' represents the integer 3-c'', e represents 0 or 1, f represents 0 or 1, g represents 0 or 1, ·h represents 0 or 1 (provided that at least one of e, f, g and h is different from 0) The organosilicon compound includes at least one of the following:

[0061] The substituents R1, R2, R3, R4, R5, R5', R5'', R6, R6', R6'', R7, R8, L, A', A'', A''' and A'''' in the compounds of formula (I) and formula (II) are illustrated in the following examples: Examples of C1-C6 alkyl groups are methyl, ethyl, propyl, isopropyl, n-butyl, s-butyl and t-butyl, n-pentyl and n-hexyl groups. Propyl, ethyl and methyl are preferred alkyl groups. Examples of C2-C6 alkenyl groups are vinyl, allyl, but-2-enyl, but-3-enyl and isobutenyl, with preferred C2-C6 alkenyl groups being vinyl and allyl. Preferred examples of hydroxy C1-C6 alkyl groups are hydroxymethyl, 2-hydroxyethyl, 2-hydroxypropyl, 3-hydroxypropyl, 4-hydroxybutyl, 5-hydroxypentyl and 6-hydroxyhexyl groups; the 2-hydroxyethyl group is particularly preferred. Examples of amino C1-C6 alkyl groups are aminomethyl, 2-aminoethyl and 3-aminopropyl groups. The 2-aminoethyl group is particularly preferred. Straight-chain divalent C1-C 20 Examples of alkylene groups include, for example, methylene (-CH2-), ethylene (-CH2-CH2-), propylene (-CH2-CH2-CH2-) and butylene (-CH2-CH2-CH2-CH2-). The propylene group (-CH2-CH2-CH2-) is particularly preferred. From a chain length of 3 C atoms, the divalent alkylene group may be branched. Branched divalent C3-C 20 Examples of alkylene groups are (-CH2-CH(CH3)-) and (-CH2-CH(CH3)-CH2-).

[0062] Formula (I): [ka] In the organosilicon compound of The radicals R1 and R2, independently of one another, represent a hydrogen atom or a C1-C6 alkyl group. Very particularly preferably, the radicals R1 and R2 both represent a hydrogen atom.

[0063] The central part of the organosilicon compound contains a structural unit or a linear or branched divalent C1-C 20There is a linker -L- which represents an alkylene group.

[0064] Bivalent C1-C 20 The alkylene group is a divalent or double bond C1-C 20 Sometimes referred to as an alkylene group, this means that each group L can participate in two bonds: one bond is from the amino group R1R2N to the linker L, and the second bond is between the linker L and the silicon atom.

[0065] Preferably, -L- is a linear divalent C-C 20 It is more preferred that -L- represents a linear divalent C1-C6 alkylene group. Particularly preferred, -L- represents a methylene group (-CH2-), an ethylene group (-CH2-CH2-), a propylene group (-CH2-CH2-CH2-) or a butylene group (-CH2-CH2-CH2-CH2-). Very particularly preferred, L represents a propylene group (-CH2-CH2-CH2-).

[0066] The linear propylene group (-CH2-CH2-CH2-) is also called the propane-1,3-diyl group.

[0067] Formula (I): [ka] The organosilicon compounds have a silicon-containing group -Si(OR3) at one end. a (R4) b has.

[0068] Terminal structural unit -Si(OR3) a (R4) b In the formula, the functional group R3 represents a hydrogen atom or a C1-C6 alkyl group, and the functional group R4 represents a C1-C6 alkyl group. Particularly preferably, R3 and R4, independently of each other, represent a methyl group or an ethyl group.

[0069] In this case, a represents an integer between 1 and 3, and b represents the integer 3-a. If a represents the number 3, then b is equal to 0. If a represents the number 2, then b is equal to 1. If a represents the number 1, then b is equal to 2.

[0070] Particularly resistant films were obtained when the agent (a) contained at least one organosilicon compound (a1) of formula (I) in which the functional groups R3 and R4, independently of one another, represent a methyl or ethyl group.

[0071] Thus, when using a method for dyeing keratin materials, it was likewise possible to obtain colorations with the best washing fastness when agent (a) contains at least one organosilicon compound of formula (I) in which the functional groups R3 and R4, independently of one another, represent a methyl or ethyl group.

[0072] Furthermore, it has been possible to obtain colorations with the best washing fastness when agent (a) contains at least one organosilicon compound of formula (I) in which the functional group a represents the number 3. In this case, b represents the number 0.

[0073] In another preferred embodiment, the agent (a) used in the method has the formula (I): [In the formula, R3 and R4 each independently represent a methyl group or an ethyl group; a represents the number 3, ·b represents the number 0] The present invention is characterized in that it contains at least one organosilicon compound (a1) of the above formula.

[0074] In another preferred embodiment, the method comprises the step of: [ka] [In the formula, R1 and R2 each represent a hydrogen atom. L represents a linear divalent C1-C6 alkylene group, preferably a propylene group (-CH2-CH2-CH2-) or an ethylene group (-CH2-CH2-), R3 represents a hydrogen atom, an ethyl group, or a methyl group; R4 represents a methyl group or an ethyl group; a represents the number 3, ·b represents the number 0] The present invention is characterized in that it contains at least one organosilicon compound (a1) of the above formula.

[0075] Particularly well suited to achieve the object according to the invention are organosilicon compounds of the formula (I): (3-aminopropyl)triethoxysilane, [ka] (3-aminopropyl)trimethoxysilane, [ka] 1-(3-aminopropyl)silanetriol, [ka]

[0076] (2-aminoethyl)triethoxysilane, [ka] (2-aminoethyl)trimethoxysilane, [ka] 1-(2-aminoethyl)silanetriol, [ka]

[0077] (3-dimethylaminopropyl)triethoxysilane, [ka] (3-Dimethylaminopropyl)trimethoxysilane, [ka] 1-(3-dimethylaminopropyl)silanetriol, [ka]

[0078] (2-Dimethylaminoethyl)triethoxysilane, [ka] (2-Dimethylaminoethyl)trimethoxysilane, and [ka] 1-(2-Dimethylaminoethyl)silanetriol [ka] It is.

[0079] In another preferred embodiment, the method is characterized in that the agent (a) comprises at least one organosilicon compound (a1) selected from the following group: (3-aminopropyl)triethoxysilane, (3-aminopropyl)trimethoxysilane, 1-(3-aminopropyl)silanetriol (2-aminoethyl)triethoxysilane, (2-aminoethyl)trimethoxysilane, 1-(2-aminoethyl)silanetriol, (3-dimethylaminopropyl)triethoxysilane, (3-Dimethylaminopropyl)trimethoxysilane, 1-(3-dimethylaminopropyl)silanetriol, (2-Dimethylaminoethyl)triethoxysilane, (2-Dimethylaminoethyl)trimethoxysilane, and / or 1-(2-Dimethylaminoethyl)silanetriol

[0080] The organosilicon compounds of formula (I) above are commercially available. (3-aminopropyl)trimethoxysilane can be purchased, for example, from Sigma-Aldrich. (3-aminopropyl)triethoxysilane is commercially available from Sigma-Aldrich.

[0081] In the context of another embodiment, the agent has formula (II): [ka] The compound (a1) contains at least one organosilicon compound of the formula (a1).

[0082] The organosilicon compounds of formula (II) according to the invention each contain a silicon-containing group (RO) c (R6) d Si- and -Si(R6') d’ (OR5') c’ at both ends.

[0083] The central portion of the molecule of formula (II) contains the group -(A) e - and -[NR7-(A')] f - and - [O-(A'')] g - and -[NR8-(A'')] h - is present. In this case, each of the functional groups e, f, g and h, independently of one another, can represent the number 0 or 1, provided that at least one of e, f, g and h is different from 0. In other words, the organosilicon compound of formula (II) according to the invention comprises at least one group from the group consisting of -(A)- and -[NR7-(A')]- and -[O-(A'')]- and -[NR8-(A''')]-.

[0084] Two terminal structural units (RO) c (R6) d Si- and -Si(R6') d’ (OR5') c’In the formula (I), the functional groups R5, R5', R5" each independently represent a hydrogen atom or a C1-C6 alkyl group. The groups R6, R6' and R6" each independently represent a C1-C6 alkyl group.

[0085] In this case, c represents an integer between 1 and 3, and d represents the integer 3-c. If c represents the number 3, then d is equal to 0. If c represents the number 2, then d is equal to 1. If c represents the number 1, then d is equal to 2.

[0086] Similarly, c' represents an integer between 1 and 3, and d' represents the integer 3-c'. If c' represents the number 3, then d' is equal to 0. If c' represents the number 2, then d' is equal to 1. If c' represents the number 1, then d' is equal to 2.

[0087] It has been possible to obtain films with the highest stability, or colorations with the highest washing fastness, when the functional groups c and c' both represent the number 3. In this case, d and d' both represent the number 0.

[0088] In another preferred embodiment, the method comprises the step of: [ka] [In the formula, R5 and R5' are each independently a methyl or ethyl group; c and c' together represent the number 3, · d and d' both represent the number 0. The present invention is characterized in that it contains at least one organosilicon compound (a1) of the above formula.

[0089] When c and c' are both the number 3 and d and d' are both the number 0, the organosilicon compound of formula (IIa) of the present invention is [ka] This applies.

[0090] The groups e, f, g and h can each independently represent the numbers 0 or 1, with at least one residue of the groups e, f, g and h being different from 0. Thus, the abbreviations e, f, g and h can be used to denote -(A) e - and -[NR7-(A')] f - and - [O-(A'')] g - and -[NR8-(A'')] h - defines which group is located in the center of the organosilicon compound of formula (II).

[0091] In this context, the presence of certain groups has proven to be particularly advantageous in terms of increasing the washing fastness. Particularly good results have been obtained when at least two of the groups e, f, g and h represent the number 1. Particularly preferably, e and f together represent the number 1. Furthermore, particularly preferably, g and h together represent the number 0.

[0092] When e and f both represent the number 1 and g and h both represent the number 0, the organosilicon compound according to the invention has the formula (IIb): [ka] is equivalent to.

[0093] The groups A, A', A'', A''' and A'''' are, independently of one another, linear or branched divalent C-C 20 Preferably, the groups A, A', A'', A''' and A'''' are each independently a linear divalent C-C alkylene group. 20 It is more preferred that the radicals A, A', A'', A''' and A'''' independently of one another represent a linear divalent C1-C6 alkylene radical. It is particularly preferred that the radicals A, A', A'', A''' and A'''' independently of one another represent a methylene radical (-CH2-), an ethylene radical (-CH2-CH2-), a propylene radical (-CH2-CH2-CH2-) or a butylene radical (-CH2-CH2-CH2-CH2-). It is very particularly preferred that the radicals A, A', A'', A''' and A'''' represent a propylene radical (-CH2-CH2-CH2-).

[0094] Bivalent C1-C 20 The alkylene group is a divalent C-C 20 They may also be referred to as alkylene groups, which means that each group A, A', A'', A''' and A'''' can form two bonds.

[0095] The linear propylene group (-CH2-CH2-CH2-) is also called the propane-1,3-diyl group.

[0096] When the functional group f represents the number 1, the organosilicon compound of formula (II) comprises the structural group -[NR7-(A')]-.

[0097] When the functional group h represents the number 1, the organosilicon compound of formula (II) comprises the structural group -[NR8-(A''')]-.

[0098] In this context, R7 and R8 are each independently a hydrogen atom, a C1-C6 alkyl group, a hydroxy C1-C6 alkyl group, a C2-C6 alkenyl group, an amino C1-C6 alkyl group or a group of formula (III): [ka] represents a group.

[0099] Most preferably, the functional groups R7 and R8 independently of each other represent a hydrogen atom, a methyl group, a 2-hydroxyethyl group, a 2-alkenyl group, a 2-aminoethyl group or a group of formula (III).

[0100] When the group f represents the number 1 and the group h represents the number 0, the organosilicon compound contains the group -[NR7-(A')]- but does not contain the group -[NR8-(A''')]-. When the group R7 represents a group of formula (III), the agent (a) contains an organosilicon compound having three reactive silane groups.

[0101] In another preferred embodiment, the method comprises the step of: [ka] [In the formula, e and f together represent the number 1, g and h together represent the number 0, A and A' are each independently a linear divalent C1-C6 alkylene group; R7 represents a hydrogen atom, a methyl group, a 2-hydroxyethyl group, a 2-alkenyl group, a 2-aminoethyl group or a group of formula (III). The present invention is characterized in that it contains at least one organosilicon compound (a1) of the above formula.

[0102] In another preferred embodiment, the method is characterized in that the agent (a) comprises at least one organosilicon compound of formula (II), e and f together represent the number 1, g and h together represent the number 0, A and A' are each independently a methylene group (-CH2-), an ethylene group (-CH2-CH2-) or a propylene group (-CH2-CH2-CH2-), ·R7 represents a hydrogen atom, a methyl group, a 2-hydroxyethyl group, a 2-alkenyl group, a 2-aminoethyl group or a group of formula (III).

[0103] To achieve the objectives according to the invention, suitable organosilicon compounds of formula (II) are 3-(Trimethoxysilyl)-N-[3-(trimethoxysilyl)propyl]-1-propanamine [ka] 3-(triethoxysilyl)-N-[3-(triethoxysilyl)propyl]-1-propanamine [ka] N-Methyl-3-(trimethoxysilyl)-N-[3-(trimethoxysilyl)propyl]-1-propanamine [ka]

[0104] N-Methyl-3-(triethoxysilyl)-N-[3-(triethoxysilyl)propyl]-1-propanamine [ka] 2-[Bis[3-(trimethoxysilyl)propyl]amino]ethanol [ka] 2-[Bis[3-(triethoxysilyl)propyl]amino]ethanol [ka]

[0105] 3-(Trimethoxysilyl)-N,N-bis[3-(trimethoxysilyl)propyl]-1-propanamine [ka] 3-(triethoxysilyl)-N,N-bis[3-(triethoxysilyl)propyl]-1-propanamine [ka] N1,N1-bis[3-(trimethoxysilyl)propyl]-1,2-ethanediamine [ka]

[0106] N1,N1-bis[3-(triethoxysilyl)propyl]-1,2-ethanediamine [ka] N,N-bis[3-(trimethoxysilyl)propyl]-2-propen-1-amine [ka] N,N-Bis[3-(triethoxysilyl)propyl]-2-propen-1-amine [ka] It is.

[0107] The aforementioned organosilicon compounds of formula (II) are commercially available: Bis(trimethoxysilylpropyl)amine with CAS number 82985-35-1 can be purchased, for example, from Sigma-Aldrich.

[0108] Bis[3-(triethoxysilyl)propyl]amine, CAS number 13497-18-2, can be purchased, for example, from Sigma-Aldrich.

[0109] N-Methyl-3-(trimethoxysilyl)-N-[3-(trimethoxysilyl)propyl]-1-propanamine, also known as bis(3-trimethoxysilylpropyl)-N-methylamine, is commercially available from Sigma-Aldrich or Fluorochem.

[0110] 3-(triethoxysilyl)-N,N-bis[3-(triethoxysilyl)propyl]-1-propanamine, CAS number 18784-74-2, can be purchased, for example, from Fluorochem or Sigma-Aldrich.

[0111] In another preferred embodiment, the method is characterized in that the agent (a) comprises at least one organosilicon compound (a1) selected from the following group: 3-(trimethoxysilyl)-N-[3-(trimethoxysilyl)propyl]-1-propanamine, 3-(triethoxysilyl)-N-[3-(triethoxysilyl)propyl]-1-propanamine, N-methyl-3-(trimethoxysilyl)-N-[3-(trimethoxysilyl)propyl]-1-propanamine, N-methyl-3-(triethoxysilyl)-N-[3-(triethoxysilyl)propyl]-1-propanamine, 2-[bis[3-(trimethoxysilyl)propyl]amino]ethanol, 2-[bis[3-(triethoxysilyl)propyl]amino]ethanol, 3-(trimethoxysilyl)-N,N-bis[3-(trimethoxysilyl)propyl]-1-propanamine, 3-(trimethoxysilyl)-N,N-bis[3-(trimethoxysilyl)propyl]-1-propanamine, N1,N1-bis[3-(trimethoxysilyl)propyl]-1,2-ethanediamine, N1,N1-bis[3-(triethoxysilyl)propyl]-1,2-ethanediamine, N,N-bis[3-(trimethoxysilyl)propyl]-2-propen-1-amine, and / or N,N-Bis[3-(triethoxysilyl)propyl]-2-propen-1-amine

[0112] In further experiments, in particular dyeing experiments, it was found that the agent (a) applied to the keratin material in the method has the formula (IV): [ka] It has also proven to be very particularly advantageous if the composition comprises at least one organosilicon compound of the formula:

[0113] The compound of formula (IV) is an organosilicon compound selected from silanes having 1, 2 or 3 silicon atoms, the organosilicon compound containing one or more hydroxyl and / or hydrolyzable groups per molecule.

[0114] Formula (IV): [ka] [In the formula, R9 is C1-C 18 represents an alkyl group, ·R 10 represents a hydrogen atom or a C1-C6 alkyl group, ·R 11 represents a C1-C6 alkyl group, k represents an integer from 1 to 3, m represents an integer 3-k] The organosilicon compounds may also be referred to as silanes of the alkylalkoxysilane or alkylhydroxysilane type.

[0115] In another preferred embodiment, the method further comprises the step of: [ka] [In the formula, R9 is C1-C 18 represents an alkyl group, ·R 10 represents a hydrogen atom or a C1-C6 alkyl group, ·R 11 represents a C1-C6 alkyl group, k represents an integer from 1 to 3, m represents an integer 3-k] The present invention is characterized in that it contains at least one organosilicon compound (a1) of the above formula.

[0116] In another preferred embodiment, the method further comprises the step of: (a) comprising, in addition to the organosilicon compound of formula (I), an organosilicon compound of formula (IV): [ka] [In the formula, R9 is C1-C 18 represents an alkyl group, ·R 10 represents a hydrogen atom or a C1-C6 alkyl group, ·R 11 represents a C1-C6 alkyl group, k represents an integer from 1 to 3, m represents an integer 3-k] The present invention is characterized in that it contains at least one further organosilicon compound of the formula:

[0117] In another preferred embodiment, the method further comprises the step of: (a) comprising, in addition to the organosilicon compound of formula (II), an organosilicon compound of formula (IV): [ka] [In the formula, R9 is C1-C 18 represents an alkyl group, ·R 10 represents a hydrogen atom or a C1-C6 alkyl group, ·R 11 represents a C1-C6 alkyl group, k represents an integer from 1 to 3, m represents an integer 3-k] The present invention is characterized in that it contains at least one further organosilicon compound of the formula:

[0118] In another preferred embodiment, the method further comprises the step of: (a) comprising, in addition to the organosilicon compounds of formula (I) and / or (II), a compound of formula (IV): [ka] [In the formula, R9 is C1-C 18 represents an alkyl group, ·R 10 represents a hydrogen atom or a C1-C6 alkyl group, ·R 11 represents a C1-C6 alkyl group, k represents an integer from 1 to 3, m represents an integer 3-k] The present invention is characterized in that it contains at least one further organosilicon compound of the formula:

[0119] In the organosilicon compound of formula (IV), the functional group R9 is C1-C 18 This C1-C alkyl group. 18 The alkyl group is saturated and can be linear or branched. R is preferably a linear C-C 18R9 represents an alkyl group. Preferably, R9 represents a methyl group, an ethyl group, an n-propyl group, an n-butyl group, an n-pentyl group, an n-hexyl group, an n-octyl group, an n-dodecyl group, or an n-octadecyl group. Particularly preferably, R9 represents a methyl group, an ethyl group, an n-hexyl group, or an n-octyl group.

[0120] In the organosilicon compound of formula (IV), the functional group R 10 represents a hydrogen atom or a C1-C6 alkyl group. 10 represents a methyl group or an ethyl group.

[0121] In the organosilicon compound of formula (IV), the functional group R 11 represents a C1-C6 alkyl group. Particularly preferably, R 11 represents a methyl group or an ethyl group.

[0122] Furthermore, k represents an integer from 1 to 3, and m represents an integer 3-k. When k represents the number 3, m is equal to 0. When k represents the number 2, m is equal to 1. When k represents the number 1, m is equal to 2.

[0123] When an agent (a) was used in the process comprising at least one organosilicon compound (a1) of formula (IV) in which the functional group k represents the number 3, it was possible to obtain particularly stable films, i.e. colorations having particularly good washing fastness. In this case, the group m represents the number 0.

[0124] Organosilicon compounds of formula (IV) which are particularly suitable for achieving the object according to the invention are Methyltrimethoxysilane [ka] Methyltriethoxysilane [ka] Ethyltrimethoxysilane [ka]

[0125] Ethyltriethoxysilane [ka] n-Hexyltrimethoxysilane [ka] n-Hexyltriethoxysilane [ka]

[0126] n-Octyltrimethoxysilane [ka] n-Octyltriethoxysilane [ka] n-dodecyltrimethoxysilane, and / or [ka] n-Dodecyltriethoxysilane [ka] It is.

[0127] In another preferred embodiment, the method is characterized in that the agent (a) comprises at least one organosilicon compound (a1) of formula (IV) selected from the following group: Methyltrimethoxysilane Methyltriethoxysilane Ethyltrimethoxysilane Ethyltriethoxysilane Propyltrimethoxysilane Propyltriethoxysilane Hexyltrimethoxysilane Hexyltriethoxysilane Octyltrimethoxysilane Octyltriethoxysilane Dodecyltrimethoxysilane Dodecyltriethoxysilane Octadecyltrimethoxysilane and / or Octadecyltriethoxysilane

[0128] The abovementioned organosilicon compounds are reactive compounds. In this context, it has proven to be advantageous if the agent (a) comprises one or more organosilicon compounds (a1) in a total amount of 0.1 to 20% by weight, preferably 1 to 15% by weight, particularly preferably 2 to 8% by weight, based on the total weight of the agent (a).

[0129] In another preferred embodiment, the method is characterized in that the agent (a) comprises one or more organosilicon compounds (a1) in a total amount of 0.1 to 20% by weight, preferably 1 to 15% by weight, particularly preferably 2 to 8% by weight, based on the total weight of agent (a).

[0130] In order to achieve particularly good dyeing results, it is particularly advantageous to use organosilicon compounds of formula (I) and / or (II) in the agent (a) in a specific range of amounts.Particularly preferably, the agent (a) contains one or more organosilicon compounds of formula (I) and / or (II) in a total amount of 0.1 to 10% by weight, preferably 0.5 to 5% by weight, particularly preferably 0.5 to 3% by weight, based on the total weight of the agent (a).

[0131] In another preferred embodiment, the method is characterized in that the agent (a) comprises one or more organosilicon compounds of the formulae (I) and / or (II) in a total amount of 0.1 to 10% by weight, preferably 0.5 to 5% by weight, particularly preferably 0.5 to 3% by weight, based on the total weight of agent (a).

[0132] It has furthermore been found to be very particularly preferred if organosilicon compounds of formula (IV) are also present in agent (a) in certain ranges of amounts. Particularly preferably, agent (a) comprises one or more organosilicon compounds of formula (IV) in a total amount of 0.1 to 20% by weight, preferably 2 to 15% by weight, particularly preferably 4 to 9% by weight, based on the total weight of agent (a).

[0133] In another preferred embodiment, the method is characterized in that the agent (a) contains one or more organosilicon compounds of formula (IV) in a total amount of 0.1 to 20% by weight, preferably 2 to 15% by weight, particularly preferably 3.2 to 10% by weight, based on the total weight of agent (a).

[0134] In the course of the research leading to the present invention, it was found that particularly stable and uniform films can be obtained on keratinous materials if agent (a) contains two organosilicon compounds which are structurally different from one another.

[0135] In another preferred embodiment, the method is characterized in that agent (a) comprises at least two organosilicon compounds that are structurally different from each other.

[0136] In a preferred embodiment, the method is characterized in that an agent (a) containing at least one organosilicon compound of formula (I) and at least one organosilicon compound of formula (IV) is applied to the keratin material.

[0137] In an obviously very particularly preferred embodiment, the method is characterized in that an agent (a) is applied to the keratin material, comprising at least one organosilicon compound of formula (I) selected from the group consisting of (3-aminopropyl)triethoxysilane and (3-aminopropyl)trimethoxysilane, and also at least one organosilicon compound of formula (IV) selected from the group consisting of methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, hexyltrimethoxysilane and hexyltriethoxysilane.

[0138] In another preferred embodiment, the method comprises the step of: 0.5 to 5% by weight of at least one first organosilicon compound (a1) selected from the group consisting of (3-aminopropyl)trimethoxysilane, (3-aminopropyl)triethoxysilane, (2-aminoethyl)trimethoxysilane, (2-aminoethyl)triethoxysilane, (3-dimethylaminopropyl)trimethoxysilane, (3-dimethylaminopropyl)triethoxysilane, (2-dimethylaminoethyl)trimethoxysilane, and (2-dimethylaminoethyl)triethoxysilane, 3.2 to 10% by weight of at least one second organosilicon compound (a1) selected from the group consisting of methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, hexyltrimethoxysilane, hexyltriethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, dodecyltrimethoxysilane, dodecyltriethoxysilane, octadecyltrimethoxysilane, and octadecyltriethoxysilane The present invention is characterized by comprising:

[0139] In the context of this embodiment, the agent (a) comprises one or more organosilicon compounds of a first group in a total amount of 0.5 to 5% by weight, the organosilicon compounds of the first group being selected from the group consisting of (3-aminopropyl)trimethoxysilane, (3-aminopropyl)triethoxysilane, (2-aminoethyl)trimethoxysilane, (2-aminoethyl)triethoxysilane, (3-dimethylaminopropyl)trimethoxysilane, (3-dimethylaminopropyl)triethoxysilane, (2-dimethylaminoethyl)trimethoxysilane and / or (2-dimethylaminoethyl)triethoxysilane.

[0140] In the context of this embodiment, agent (a) comprises one or more organosilicon compounds of a second group in a total amount of 3.2 to 10 wt.%, which organosilicon compounds of the second group are selected from the group consisting of methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, hexyltrimethoxysilane, hexyltriethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, dodecyltrimethoxysilane, dodecyltriethoxysilane, octadecyltrimethoxysilane, and octadecyltriethoxysilane.

[0141] In the case of organosilicon compounds having at least one hydrolyzable group, hydrolysis occurs even with the addition of a small amount of water. The hydrolysis product and / or the organosilicon compound having at least one hydroxyl group can react with each other in a condensation reaction. For this reason, both the organosilicon compound having at least one hydrolyzable group and its hydrolysis and / or condensation product can be present in agent (a). When an organosilicon compound having at least one hydroxyl group is used, both the organosilicon compound having at least one hydroxyl group and its condensation product can be present in agent (a).

[0142] Condensation products are understood to mean products obtained by the reaction of at least two organosilicon compounds having at least one hydroxyl group or hydrolyzable group per molecule, with the removal of water and / or alkanol.The condensation products may be, for example, dimers, but also trimers or oligomers, and the condensation products are in equilibrium with the monomers.Depending on the amount of water used or consumed in hydrolysis, the equilibrium of the monomeric organosilicon compounds shifts towards the condensation products.

[0143] Very particularly good results have been obtained when organosilicon compounds of formula (I) and / or (II) are used in this method. As mentioned above, hydrolysis / condensation occurs in the presence of traces of moisture, so the hydrolysis / condensation products of organosilicon compounds (I) and / or (II) are also covered in this embodiment.

[0144] pH of agent (a) It has been found that the agent (a) is preferably prepared in the form of a hydrated agent having an alkaline pH.

[0145] In a preferred embodiment, the method is characterized in that the agent (a) has a pH in the range of 8.5-12, more preferably in the range of 9-11.5, particularly preferably in the range of 9.5-11.

[0146] Agent (b) In addition to the application of agents (v) and (a), the method for treating keratinous materials also includes the application of an agent (b), which is characterized in that it comprises at least one sealing agent (b1).

[0147] The application of agent (b) to the keratinous material treated with agent (a) makes the coloring obtained by the process more durable. In particular, the application of agent (b) makes it possible to improve the wash fastness and rub resistance of the coloring obtained by said process.

[0148] The sealing agent (b1) preferably comprises a compound selected from the group consisting of a film-forming polymer, an alkalizing agent, an acidifying agent and mixtures thereof.

[0149] It may be preferred that the sealing agent comprises a film-forming polymer.

[0150] A polymer should be understood as a macromolecule consisting of similar repeating organic units, with a molecular weight of at least 1,000 g / mol, preferably at least 2,500 g / mol, particularly preferably at least 5,000 g / mol. The polymer of the present invention may be a synthetically prepared polymer, prepared by polymerization of a monomer type or by polymerization of various structurally different monomer types. When a polymer is produced by polymerization of one type of monomer, it is a homopolymer. When structurally different types of monomers are used in the polymerization, the resulting polymer is called a copolymer.

[0151] The maximum molecular weight of the polymer depends on the degree of polymerization (number of polymerized monomers) and the batch size, and is also determined by the polymerization method. In the context of the present invention, the maximum molecular weight of the film-forming polymer as sealing agent (b1) is 10 7 g / mol or less, preferably 10 6 g / mol or less, particularly preferably 10 5 It is preferably less than g / mol.

[0152] In the context of the present invention, a film-forming polymer means a polymer capable of forming a film on a substrate, for example on a keratinous material or keratinous fiber. The formation of the film can be detected, for example, by observing the keratinous material treated with the polymer under a microscope.

[0153] The film-forming polymer (b1) in agent (b) may be hydrophilic or hydrophobic.

[0154] In the context of the first embodiment, it may be preferred to use at least one hydrophobic film-forming polymer in agent (b) as sealing reagent (b1).

[0155] A hydrophobic polymer is understood to mean a polymer which has a solubility in water at 25° C. (760 mmHg) of less than 1% by weight.

[0156] The solubility of a film-forming hydrophobic polymer in water can be measured, for example, as follows: Add 1 g of polymer to a beaker. Add water up to 100 g. Add a stir bar and heat the mixture to 25° C. on a magnetic stirrer while stirring. Allow the mixture to stir for 60 minutes. Then visually evaluate the aqueous mixture. If the mixture is too turbid to visually evaluate the polymer-water mixture, filter the mixture. If some undissolved polymer remains on the filter paper, the solubility of the polymer is less than 1% by weight.

[0157] Mention may in particular be made here of acrylic type polymers, polyurethanes, polyesters, polyamides, polyureas, cellulose polymers, nitrocellulose polymers, silicone polymers, acrylamide type polymers and polyisoprene.

[0158] Particularly well suited film-forming hydrophobic polymers are, for example, polymers from the group of copolymers of acrylic acid, copolymers of methacrylic acid, homopolymers or copolymers of acrylic acid esters, homopolymers or copolymers of methacrylic acid esters, homopolymers or copolymers of acrylic acid amides, homopolymers or copolymers of methacrylic acid amides, copolymers of vinylpyrrolidone, copolymers of vinyl alcohol, copolymers of vinyl acetate, homopolymers or copolymers of ethylene, homopolymers or copolymers of propylene, styrene, polyurethanes, polyesters and / or homopolymers or copolymers of polyamides.

[0159] In a further preferred embodiment, the agent (b) is characterized in that it comprises as sealing agent (b1) at least one film-forming hydrophobic polymer selected from the group of copolymers of acrylic acid, copolymers of methacrylic acid, homopolymers or copolymers of acrylic esters, homopolymers or copolymers of methacrylic esters, homopolymers or copolymers of acrylic acid amides, homopolymers or copolymers of methacrylic acid amides, copolymers of vinylpyrrolidone, copolymers of vinyl alcohol, copolymers of vinyl acetate, homopolymers or copolymers of ethylene, homopolymers or copolymers of propylene, homopolymers or copolymers of styrene, polyurethane, polyesters and / or polyamides.

[0160] In particular, film-forming hydrophobic polymers selected from the group of synthetic polymers, polymers obtained by free-radical polymerization or natural polymers have proven to be particularly well suited to achieving the objectives according to the invention.

[0161] Further particularly well suited film-forming hydrophobic polymers are olefins, such as cycloolefins, butadiene, isoprene or styrene, vinyl ethers, vinyl amides, at least one C1-C 20 Alkyl group, aryl group, or C2-C 10 They can be selected from homopolymers or copolymers of esters or amides of (meth)acrylic acid carrying hydroxyalkyl groups.

[0162] Further film-forming hydrophobic polymers may be selected from homopolymers or copolymers of isooctyl (meth)acrylate, isononyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, lauryl (meth)acrylate, isopentyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, ethyl (meth)acrylate, methyl (meth)acrylate, tert-butyl (meth)acrylate, stearyl (meth)acrylate, hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 3-hydroxypropyl (meth)acrylate and / or mixtures thereof.

[0163] Further film-forming hydrophobic polymers are (meth)acrylamides, n-alkyl (meth)acrylamides, especially C2-C 18 It can be selected from those having an alkyl group, for example, homopolymers or copolymers of n-ethylacrylamide, n-tert-butylacrylamide, n-octylacrylamide, and n-di(C1-C4)alkyl(meth)acrylamide.

[0164] Further preferred anionic copolymers are copolymers of acrylic acid, methacrylic acid or their C1-C6 alkyl esters, for example as commercially available under the INCI designation acrylate copolymer. A suitable commercial product is, for example, Aculyn® 33 from Rohm & Haas. However, further preferred are copolymers of acrylic acid, methacrylic acid or their C1-C6 alkyl esters with ethylenically unsaturated acids and alkoxylated fatty alcohols. Suitable ethylenically unsaturated acids are in particular acrylic acid, methacrylic acid and itaconic acid, and suitable alkoxylated fatty alcohols are in particular steareth-20 or ceteth-20.

[0165] Most particularly preferred commercially available polymers are, for example, Aculyn® 22 (acrylates / steareth-20 methacrylate copolymer), Aculyn® 28 (acrylates / beheneth-25 methacrylate copolymer), Structure 2001® (acrylates / steareth-20 itaconate copolymer), Structure 3001® (acrylates / ceteth-20 itaconate copolymer), Structure Plus® (acrylates / aminoacrylate C10-30 alkyl PEG-20 itaconate copolymer), Carbopol® 1342, 1382, Ultrez 20, Ultrez 21 (acrylates / C10-30 alkyl acrylate crosspolymer), Synthalen®, sold by Rohm and Haas. W2000® (acrylates / Palmetho-25 acrylate copolymer), or Soltex OPT (acrylates / C12-22 alkyl methacrylate copolymer).

[0166] Examples of suitable polymers based on vinyl monomers include homo- and copolymers of N-vinylpyrrolidone, vinylcaprolactam, vinyl(C1-C6)alkylpyrrole, vinyloxazole, vinylthiazole, vinylpyrimidine or vinylimidazole.

[0167] Furthermore, for example, the copolymers sold by NATIONAL STARCH under the trade names AMPHOMER® or LOVOCRYL® 47, such as octylacrylamide / acrylates / butylaminoethyl methacrylate copolymers, or the copolymers of acrylates / octylacrylamide sold by NATIONAL STARCH under the trade names DERMACRYL® LT and DERMACRYL® 79, are particularly well suited.

[0168] Examples of suitable olefin-based polymers are homopolymers and copolymers of ethylene, propylene, butene, isoprene and butadiene.

[0169] Within the context of further embodiments, block copolymers comprising at least one block of styrene or a styrene derivative can be used as the film-forming hydrophobic polymer. These block copolymers can be copolymers that, in addition to the styrene block, comprise one or more further blocks, such as styrene / ethylene, styrene / ethylene / butylene, styrene / butylene, styrene / isoprene, styrene / butadiene. The corresponding polymers are commercially available from BASF under the trade name "Luvitol HSB".

[0170] Surprisingly, it has been found that a very particularly intense and wash-resistant coloration is obtained when the agent (b) comprises as sealing agent (b1) at least one film-forming polymer selected from the group of homopolymers and copolymers of acrylic acid, homopolymers and copolymers of methacrylic acid, homopolymers and copolymers of acrylic acid esters, homopolymers and copolymers of methacrylic acid esters, homopolymers and copolymers of acrylic acid amides, homopolymers and copolymers of methacrylic acid amides, homopolymers and copolymers of vinylpyrrolidone, homopolymers and copolymers of vinyl alcohol, homopolymers and copolymers of vinyl acetate, homopolymers and copolymers of ethylene, homopolymers and copolymers of propylene, homopolymers and copolymers of styrene, polyurethane, polyesters and polyamides.

[0171] In a further preferred embodiment, the method is characterized in that the agent (b) comprises as sealing agent (b1) at least one film-forming polymer selected from the group of homopolymers and copolymers of acrylic acid, homopolymers and copolymers of methacrylic acid, homopolymers and copolymers of acrylic acid esters, homopolymers and copolymers of methacrylic acid esters, homopolymers and copolymers of acrylic acid amides, homopolymers and copolymers of methacrylic acid amides, homopolymers and copolymers of vinylpyrrolidone, homopolymers and copolymers of vinyl alcohol, homopolymers and copolymers of vinyl acetate, homopolymers and copolymers of ethylene, homopolymers and copolymers of propylene, homopolymers and copolymers of styrene, polyurethane, polyester and polyamide.

[0172] In the context of further embodiments, it may be preferred to use at least one hydrophilic film-forming polymer in agent (b) as sealing agent (b1).

[0173] A hydrophilic polymer is understood to mean a polymer which has a solubility in water at 25° C. (760 mmHg) of more than 1% by weight, preferably more than 2% by weight.

[0174] The solubility of a film-forming hydrophilic polymer in water can be measured, for example, as follows: Add 1 g of polymer to a beaker. Add water up to 100 g. Add a stir bar and heat the mixture to 25° C. on a magnetic stirrer while stirring. Allow the mixture to stir for 60 minutes. Then visually assess the aqueous mixture. A fully dissolved polymer will appear homogeneous to the naked eye. If the mixture is too turbid to visually assess the polymer and water mixture, filter the mixture. If no undissolved polymer remains on the filter paper, the polymer solubility is greater than 1 wt %.

[0175] Nonionic, anionic and cationic polymers can be used as the film-forming hydrophilic polymer.

[0176] Suitable film-forming hydrophilic polymers may, for example, be selected from the group of polyvinylpyrrolidone (co)polymers, polyvinyl alcohol (co)polymers, vinyl acetate (co)polymers, carboxyvinyl (co)polymers, acrylic acid (co)polymers, methacrylic acid (co)polymers, natural gums, polysaccharides and / or acrylamide (co)polymers.

[0177] Furthermore, it is very particularly preferable to use polyvinylpyrrolidone (PVP) and / or copolymers which contain vinylpyrrolidone as film-forming hydrophilic polymers.

[0178] In a further very particularly preferred embodiment, the agent (b) is characterized in that it comprises as sealing agent (b1) at least one film-forming hydrophilic polymer selected from the group of polyvinylpyrrolidone (PVP) and copolymers of polyvinylpyrrolidone.

[0179] It is further preferred if the agent contains polyvinylpyrrolidone (PVP) as the film-forming hydrophilic polymer. Surprisingly, the wash fastness of the colorations obtained with the PVP-containing agent (b) was also very good.

[0180] Particularly suitable polyvinylpyrrolidones are available, for example, under the name Luviskol® K from BASF SE, in particular as Luviskol® K90 or Luviskol® K85 from BASF SE.

[0181] A further particularly suitable polyvinylpyrrolidone (PVP) can be the polymer PVP K30 sold by Ashland (ISP, POI Chemical). PVP K 30 is a polyvinylpyrrolidone that is highly soluble in cold water and has the CAS number 9003-39-8. The molecular weight of PVP K 30 is approximately 40,000 g / mol.

[0182] Further very particularly suitable polyvinylpyrrolidones are the substances known under the trade names LUVITEC K 17, LUVITEC K 30, LUVITEC K 60, LUVITEC K 80, LUVITEC K 85, LUVITEC K 90 and LUVITEC K 115 and available from BASF.

[0183] The use of film-forming hydrophilic polymers from the group of the copolymers of polyvinylpyrrolidone as sealing reagent (b1) likewise led to dyeing results with particularly good washing fastness.

[0184] In this context, particularly well suited film-forming hydrophilic polymers include, for example, the vinylpyrrolidone-vinyl ester copolymers sold under the trade name Luviskol® (BASF). Luviskol® VA 64 and Luviskol® VA 73 are respectively vinylpyrrolidone / vinyl acetate copolymers and are particularly preferred non-ionic polymers.

[0185] Of the vinylpyrrolidone-containing copolymers, styrene / VP copolymers and / or vinylpyrrolidone-vinyl acetate copolymers and / or VP / DMAPA acrylate copolymers and / or VP / vinylcaprolactam / DMAPA acrylate copolymers are very particularly preferably used in the cosmetic compositions.

[0186] Vinylpyrrolidone-vinyl acetate copolymers are marketed by BASF SE under the name Luviskol® VA. VP / vinylcaprolactam / DMAPA acrylate copolymers are marketed, for example, by Ashland Inc. under the trade name Aquaflex® SF-40. VP / DMAPA acrylate copolymers are marketed, for example, by Ashland under the name Styleze CC-10, and are highly preferred vinylpyrrolidone-containing copolymers.

[0187] Further suitable copolymers of polyvinylpyrrolidone may include those obtained by reacting n-vinylpyrrolidone with at least one further monomer from the group of v-vinylformamide, vinyl acetate, ethylene, propylene, acrylamide, vinylcaprolactam, vinylcaprolactone and / or vinyl alcohol.

[0188] In a further very particularly preferred embodiment, the agent (b) is characterized in that it comprises at least one film-forming hydrophilic polymer (b1) selected from the group consisting of polyvinylpyrrolidone (PVP), vinylpyrrolidone / vinyl acetate copolymer, vinylpyrrolidone / styrene copolymer, vinylpyrrolidone / ethylene copolymer, vinylpyrrolidone / propylene copolymer, vinylpyrrolidone / vinyl caprolactam copolymer, vinylpyrrolidone / vinyl formamide copolymer and / or vinylpyrrolidone / vinyl alcohol copolymer as sealing agent (b1).

[0189] Another suitable copolymer of vinylpyrrolidone is the polymer known by the INCI name Maltodextrin / VP Copolymer.

[0190] Furthermore, when non-ionic film-forming hydrophilic polymers were used as film-forming hydrophilic polymers, it was possible to obtain intensely colored keratinous materials, especially hair, having very good wash fastness properties.

[0191] In the context of a further embodiment, the agent (b) may comprise as sealing agent (b1) at least one non-ionic film-forming hydrophilic polymer.

[0192] According to the present invention, nonionic polymers are understood to be polymers that do not carry structural units with permanent cationic or anionic groups that must be compensated by counterions under standard conditions in protic solvents, such as water, and remain electronically neutral.For example, quaternized ammonium groups are cationic groups, but protonated amines are not included.For example, carboxylic acid groups and sulfonic acid groups are anionic groups.

[0193] As non-ionic film-forming hydrophilic polymers, Polyvinylpyrrolidone, Copolymers of N-vinylpyrrolidone and vinyl esters of carboxylic acids containing 2 to 18 carbon atoms, in particular copolymers of N-vinylpyrrolidone and vinyl acetate, Copolymers of N-vinylpyrrolidone and N-vinylimidazole and methacrylamide, Copolymers of N-vinylpyrrolidone and N-vinylimidazole and acrylamide, Copolymer of N-vinylpyrrolidone and N,N-di(C1-C4)alkylamino-(C2-C4)alkylacrylamide Very particular preference is given to agents which comprise at least one polymer selected from the group consisting of:

[0194] If copolymers of N-vinylpyrrolidone and vinyl acetate are used, it is also preferred if the molar ratio of structural units of the monomers N-vinylpyrrolidone present to structural units of the monomers vinyl acetate present is in the range of 20:80 to 80:20, in particular 30:70 to 60:40. Suitable copolymers of vinylpyrrolidone and vinyl acetate are available, for example, under the trademarks Luviskol® VA 37, Luviskol® VA 55, Luviskol® VA 64 and Luviskol® VA 73 from BASF SE.

[0195] In this case, further particularly preferred polymers are selected from the INCI name VP / methacrylamide / vinylimidazole copolymers, which are available, for example, from BASF SE under the trade name Luviset Clear.

[0196] A further very particularly preferred non-ionic film-forming hydrophilic polymer is the copolymer of N-vinylpyrrolidone and N,N-dimethylaminopropyl methacrylamide, which is sold, for example, under the INCI name VP / DMAPA Acrylates Copolymer and, for example, under the trade name Styleze® CC 10 by the company ISP.

[0197] The cationic polymer is a copolymer of N-vinylpyrrolidone, N-vinylcaprolactam, N-(3-dimethylaminopropyl) methacrylamide and 3-(methacryloylamino)propyllauryldimethylammonium chloride (INCI name: Polyquaternium-69), which is sold, for example, under the trade name AquaStyle® 300 (28-32% by weight of active substance in an ethanol-water mixture, molecular weight 350,000) by the company ISP.

[0198] Further suitable film-forming hydrophilic polymers are e.g. Vinylpyrrolidone-vinylimidazolium methchloride copolymers offered under the designations Luviquat® FC 370, FC 550 and INC names Polyquaternium-16 as well as FC 905 and HM 552, Vinylpyrrolidone-vinylcaprolactam-acrylate terpolymers with acrylic esters and acrylic amides as third monomer units, for example those offered under the name Aquaflex® SF 40 It is.

[0199] Polyquaternium-11 is a reaction product of diethyl sulfate with a copolymer of vinylpyrrolidone and dimethylaminoethyl methacrylate. Suitable commercial products are available, for example, from BASF SE under the names Dehyquart® CC 11 and Luviquat® PQ 11 PN, or from Ashland Inc. under the names Gafquat 440, Gafquat 734, Gafquat 755 or Gafquat 755N.

[0200] Polyquaternium-46 is a reaction product of vinyl caprolactam and vinyl pyrrolidone with methyl vinylimidazolium methosulfate, and is available, for example, from BASF SE under the name Luviquat® Hold. Polyquaternium-46 is preferably used in an amount of 1-5% by weight, based on the total weight of the cosmetic composition. It is particularly preferred to use Polyquaternium-46 in combination with a cationic guar compound. It is even most preferred to use Polyquaternium-46 in combination with a cationic guar compound and Polyquaternium-11.

[0201] For example, acrylic acid polymers, which may be present in non-crosslinked or crosslinked form, can be used as suitable anionic film-forming hydrophilic polymers. Corresponding products are marketed, for example, by Lubrizol under the trade names Carbopol 980, 981, 954, 2984 and 5984 or by 3V Sigma (The Sun Chemicals, Inter Harz) under the names Synthalen M and Synthalen K.

[0202] Examples of suitable film-forming hydrophilic polymers from the group of natural gums are xanthan gum, gellan gum, and carob gum.

[0203] Examples of suitable film-forming hydrophilic polymers from the group of the polysaccharides are hydroxyethyl cellulose, hydroxypropyl cellulose, ethyl cellulose and carboxymethyl cellulose.

[0204] Suitable film-forming hydrophilic polymers from the group of acrylamide are, for example, polymers prepared from monomers of (meth)acrylamido-C1-C4-alkylsulfonic acid or salts thereof. Corresponding polymers can be selected from the polymers of polyacrylamido-methanesulfonic acid, polyacrylamido-ethanesulfonic acid, polyacrylamido-propanesulfonic acid, poly-2-acrylamido-2-methylpropanesulfonic acid, poly-2-methylacrylamido-2-methylpropanesulfonic acid and / or poly-2-methylacrylamido-n-butanesulfonic acid.

[0205] Preferred polymers of poly(meth)acrylamide-C1-C4-alkylsulfonic acid are crosslinked and at least 90% neutralized. These polymers may be crosslinked or non-crosslinked.

[0206] Crosslinked fully or partially neutralized polymers of the poly-2-acrylamido-2-methylpropanesulfonic acid type are known under the INCI names "ammonium polyacrylamide-2-methyl-propanesulfonate" or "ammonium polyacryldimethyltauramides".

[0207] Another preferred polymer of this type is a crosslinked poly-2-acrylamido-2 methyl-propanesulfonic acid polymer, partially neutralized with ammonia, sold under the tradename Hostacerin AMPS by Clariant.

[0208] In a further obviously very particularly preferred embodiment the method is characterized in that the agent (b) comprises at least one anionic film-forming polymer as sealing agent (b1).

[0209] In this context, the agent (b) comprises, as sealing agent (b1), at least one structural unit of the formula (PI) and at least one structural unit of the formula (P-II): [ka] [In the formula, M represents a hydrogen atom, ammonium (NH4), sodium, potassium, 1 / 2 magnesium, or 1 / 2 calcium] The best results have been achieved when the composition comprises at least one film-forming polymer comprising

[0210] In another preferred embodiment, the method further comprises the step of: the agent (b) comprises, as sealing reagent (b1), at least one structural unit of the formula (PI) and at least one structural unit of the formula (P-II): [ka] [In the formula, M represents a hydrogen atom, ammonium (NH4), sodium, potassium, 1 / 2 magnesium, or 1 / 2 calcium] The composition is characterized in that it comprises at least one film-forming polymer comprising

[0211] When M represents a hydrogen atom, the structural unit of formula (PI) is based on an acrylic acid unit.

[0212] When M represents an ammonium counterion, the structural unit of formula (PI) is based on the ammonium salt of acrylic acid.

[0213] When M represents a sodium counterion, the structural unit of formula (PI) is based on the sodium salt of acrylic acid.

[0214] When M represents a potassium counterion, the structural unit of formula (PI) is based on the potassium salt of acrylic acid.

[0215] When M represents one-half equivalent of a magnesium counterion, the structural unit of formula (PI) is based on the magnesium salt of acrylic acid.

[0216] When M is one-half equivalent of a calcium counterion, the structural unit of formula (PI) is based on the calcium salt of acrylic acid.

[0217] The film-forming polymer (b1) is preferably used in a specific amount range in the agent (b). In this context, to achieve the object of the present invention, it has proven particularly preferred if the agent (b) comprises one or more film-forming polymers (b1) as sealing agent (b1) in a total amount of 0.1 to 18% by weight, preferably 1 to 16% by weight, more preferably 5 to 14.5% by weight, most particularly preferably 8 to 12% by weight, based on the total weight of the agent (b).

[0218] In a further preferred embodiment, the method is characterized in that the agent (b) comprises one or more film-forming polymers (b1) as sealing agent (b1) in a total amount of 0.1 to 18% by weight, preferably 1 to 16% by weight, more preferably 5 to 14.5% by weight, most particularly preferably 8 to 12% by weight, based on the total weight of agent (b).

[0219] The application of agent (b), which comprises a film-forming polymer as sealing agent (b1), is intended to seal and / or fix any colored film initially formed by application of agent (a). Application of a second agent (b), which comprises a film-forming polymer as sealing agent (b1), deposits the film-forming polymer (b1) on any colored film formed in the first layer in the form of a further film. If agent (b) further comprises at least one dyeing compound, the color impression of the colored film formed in the first step is enhanced or corrected depending on the dyeing compound used, or the coloration of the treated keratin material is obtained by forming a second colored film on the first uncolored film. The multilayer film system thus formed has an improved resistance to external influences.

[0220] In another embodiment, the sealing reagent (b1) comprises an alkalizing agent.

[0221] Particularly preferably, the alkalizing agent is selected from the group consisting of ammonia, C2-C6 alkanolamines, basic amino acids, alkali metal hydroxides and alkaline earth metal hydroxides.

[0222] In the context of another particularly preferred embodiment, the method is characterized in that the agent (b) comprises as sealing reagent (b1) at least one alkalizing agent selected from the group consisting of ammonia, C2-C6 alkanolamines, basic amino acids, alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal silicates, alkali metal metasilicates, alkaline earth metal silicates, alkaline earth metal metasilicates, alkali metal carbonates and alkaline earth metal carbonates.

[0223] It has been found that after-treatment with an agent (b) containing ammonia has a particularly positive effect on improving the wash fastness and rub fastness of the coloration obtained with the process.

[0224] In the context of a further very particularly preferred embodiment, the method is characterized in that the agent (b) comprises ammonia as sealing agent (b1).

[0225] It was also possible to achieve good results when the agent (b) contained at least one C2-C6 alkanolamine as sealing agent (b1).

[0226] The alkanolamine that can be used in agent (b) can be preferably selected from the group of primary amines having C2-C6 alkyl group base structure with at least one hydroxyl group.Preferred alkanolamines are selected from the group formed by 2-aminoethan-1-ol (monoethanolamine), 3-aminopropan-1-ol, 4-aminobutan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol, 1-aminobutan-2-ol, 1-aminopentan-2-ol, 1-aminopentan-3-ol, 1-aminopentan-4-ol, 3-amino-2-methylpropan-1-ol, 1-amino-2-methylpropan-2-ol, 3-aminopropane-1,2-diol and 2-amino-2-methylpropane-1,3-diol.

[0227] In a further preferred embodiment, the method according to the invention is characterized in that the agent (b) comprises as sealing reagent (b1) at least one alkalizing agent from the group of alkanolamines, preferably selected from the group consisting of 2-aminoethan-1-ol (monoethanolamine), 3-aminopropan-1-ol, 4-aminobutan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol, 1-aminobutan-2-ol, 1-aminopentan-2-ol, 1-aminopentan-3-ol, 1-aminopentan-4-ol, 3-amino-2-methylpropan-1-ol, 1-amino-2-methylpropan-2-ol, 3-aminopropane-1,2-diol and 2-amino-2-methylpropane-1,3-diol.

[0228] It was also possible to achieve good results when the agent (b) contained at least one basic amino acid as sealing agent (b1).

[0229] Amino acids in the sense of the present invention are organic compounds which contain at least one protonatable amino group and at least one -COOH or one -SO3H group in their structure. Preferred amino acids are aminocarboxylic acids, in particular α-(alpha)-aminocarboxylic acids and ω-aminocarboxylic acids, with α-aminocarboxylic acids being particularly preferred.

[0230] According to the invention, a basic amino acid is understood to mean an amino acid which has an isoelectric point pI greater than 7.0.

[0231] Basic α-aminocarboxylic acids contain at least one asymmetric carbon atom. In the context of the present invention, both enantiomers can be used equally as specific compounds or as mixtures thereof, especially racemates. However, it is particularly advantageous to use the naturally preferred isomeric form, usually the L form.

[0232] The basic amino acid is preferably selected from the group formed by arginine, lysine, ornithine and histidine, more preferably arginine and lysine.Accordingly, in another particularly preferred embodiment, the method is characterized in that the sealing reagent (b1) is an alkalizing agent comprising a basic amino acid from the group of arginine, lysine, ornithine and / or histidine.

[0233] In a further preferred embodiment, the method is characterized in that the agent (b) comprises as sealing reagent (b1) at least one alkalizing agent from the group of basic amino acids, preferably selected from the group of arginine, lysine, ornithine and histidine.

[0234] It has also been possible to achieve good results when the agent (b) contains at least one alkali metal hydroxide as sealing agent (b1). Examples of suitable alkali metal hydroxides include sodium hydroxide and potassium hydroxide.

[0235] It has also been possible to achieve good results when the agent (b) contains as sealing agent (b1) an alkalizing agent which contains at least one alkaline earth metal hydroxide. Examples of suitable alkaline earth metal hydroxides include magnesium hydroxide, calcium hydroxide and barium hydroxide.

[0236] It has also been possible to achieve good results when the agent (b) contains at least one alkali metal silicate and / or alkali metal metasilicate as sealing agent (b1). Suitable alkali metal silicates are, for example, sodium silicate and potassium silicate. Suitable alkali metal metasilicates are, for example, sodium metasilicate and potassium metasilicate.

[0237] Good results can also be achieved when the agent (b) contains at least one alkali metal carbonate and / or alkaline earth metal carbonate as sealing agent (b1). Suitable alkali metal carbonates are, for example, sodium carbonate and potassium carbonate. Suitable alkaline earth metal carbonates are, for example, magnesium carbonate and calcium carbonate.

[0238] In the group of the aforementioned sealing reagents (b1) in the form of alkalizing agents, ammonia, C2-C6 alkanolamines, basic amino acids and alkali metal hydroxides have proven to be particularly suitable.

[0239] In the context of a further particularly preferred embodiment, the method is characterized in that the agent (b) comprises as sealing reagent (b1) at least one alkalizing agent selected from the group of ammonia, C2-C6 alkanolamines, basic amino acids and alkali metal hydroxides.

[0240] In the context of a further particularly preferred embodiment, the method is characterized in that the agent (b) comprises as sealing reagent (b1) at least one alkalizing agent selected from the group consisting of ammonia, 2-aminoethan-1-ol, 3-aminopropan-1-ol, 4-aminobutan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol, 1-aminobutan-2-ol, 1-aminopentan-2-ol, 1-aminopentan-3-ol, 1-aminopentan-4-ol, 3-amino-2-methylpropan-1-ol, 1-amino-2-methylpropan-2-ol, 3-aminopropane-1,2-diol, 2-amino-2-methylpropane-1,3-diol, arginine, lysine, ornithine, histidine, sodium hydroxide and potassium hydroxide.

[0241] Agent (b) comprises an alkalizing agent as sealing agent (b1) in a cosmetic carrier, preferably an aqueous cosmetic carrier.

[0242] In this context, it has been found to be preferred if agent (b) comprises 5.0 to 99.0% by weight, preferably 15.0 to 97.0% by weight, more preferably 25.0 to 97.0% by weight, even more preferably 35.0 to 97.0% by weight and very particularly preferably 45.0 to 97.0% by weight of water, relative to the total weight of agent (b).

[0243] In the context of a further embodiment, the method is characterized in that the agent (b) comprises 5.0 to 99.0% by weight, preferably 15.0 to 97.0% by weight, more preferably 25.0 to 97.0% by weight, even more preferably 35.0 to 97.0% by weight and particularly preferably 45.0 to 97.0% by weight of water, based on the total weight of agent (b).

[0244] The alkalizing agent contained in agent (b) influences the pH of agent (b), whereby it has been found that certain alkaline pH values ​​have a beneficial effect on the color strength and color fastness achievable in this manner.

[0245] For this reason, the agent (b) comprising an alkalizing agent as sealing reagent (b1) preferably has a pH of 7.0 to 12.0, preferably 7.5 to 11.5, more preferably 8.0 to 11.0, very particularly preferably 8.5 to 9.5.

[0246] The pH measurement can be carried out using the usual methods known from the prior art, such as by glass electrode via combination electrode or by pH measurement via pH indicator paper.

[0247] In a further very particularly preferred embodiment the method is characterized in that the agent (b) comprises an alkalizing agent as sealing reagent (b1) and has a pH of 7.0 to 12.0, preferably 7.5 to 11.5, more preferably 8.0 to 11.0 and very particularly preferably 8.5 to 9.5.

[0248] pH values ​​within the meaning of the present invention are pH values ​​measured at a temperature of 22°C.

[0249] In yet another alternative embodiment, the sealing reagent (b1) comprises an acidifying agent.

[0250] Particularly preferably, the acidifying agent is selected from the group consisting of inorganic acids, organic acids and mixtures thereof.

[0251] Good results have been achieved when the agent (b) comprises at least one inorganic acid as sealing agent (b1). Suitable inorganic acids are, for example, phosphoric acid, sulfuric acid and / or hydrochloric acid, with sulfuric acid being particularly preferred.

[0252] In a further preferred embodiment, the method is characterized in that the agent (b) comprises as sealing reagent (b1) at least one acidifying agent selected from the group of inorganic acids, which is preferably selected from the group consisting of phosphoric acid, sulfuric acid, hydrochloric acid and mixtures thereof.

[0253] Furthermore, in the context of a more preferred embodiment, the method is characterized in that the agent (b) comprises sulfuric acid as sealing agent (b1).

[0254] It was also possible to achieve good results when the agent (b) contained at least one organic acid as sealing agent (b1). The organic acid is preferably formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, isovaleric acid, pivalic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, glyceric acid, glyoxylic acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, propiolic acid, crotonic acid, isocrotonic acid, elaidic acid, maleic acid, fumaric acid, muconic acid, citraconic acid, mesaconic acid, camphoric acid, benzoic acid, o,m,p-phthalic acid, naphthoic acid, toluoic acid, hydroatropic acid, atropic acid, cinnamic acid, isonicosanoic acid, cyclohex ... The acid may be selected from the group consisting of cotinic acid, nicotinic acid, bicarbamic acid, 4,4'-dicyano-6,6'-binicotinic acid, 8-carbamoyloctanoic acid, 1,2,4-pentanetricarboxylic acid, 2-pyrrolecarboxylic acid, 1,2,4,6,7-naphthalenepentaacetic acid, malonaldehyde acid, 4-hydroxyphthalamic acid, 1-pyrazolecarboxylic acid, gallic acid or propanetricarboxylic acid, glycolic acid, gluconic acid, lactic acid, maleic acid, ascorbic acid, malic acid, tartaric acid, citric acid and mixtures thereof.

[0255] In a further preferred embodiment, the method further comprises the step of: the agent (b) comprises as sealing reagent (b1) at least one acidifying agent selected from the group consisting of organic acids, the organic acids being preferably formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, isovaleric acid, pivalic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, glyceric acid, glyoxylic acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, propiolic acid, crotonic acid, isocrotonic acid, elaidic acid, maleic acid, fumaric acid, muconic acid, citraconic acid, mesaconic acid, camphoric acid, benzoic acid, o,m,p-phthalic acid, naphthoic acid , toluoyl acid, hydratropic acid, atropic acid, cinnamic acid, isonicotinic acid, nicotinic acid, bicarbamic acid, 4,4'-dicyano-6,6'-binicotinic acid, 8-carbamoyloctanoic acid, 1,2,4-pentanetricarboxylic acid, 2-pyrrolecarboxylic acid, 1,2,4,6,7-naphthalenepentaacetic acid, malonaldehyde acid, 4-hydroxyphthalamic acid, 1-pyrazolecarboxylic acid, gallic acid or propanetricarboxylic acid, glycolic acid, gluconic acid, lactic acid, maleic acid, ascorbic acid, malic acid, tartaric acid, citric acid and mixtures thereof.

[0256] Furthermore, in the context of an even more preferred embodiment, the method is characterized in that the agent (b) comprises acetic acid as sealing reagent (b1).

[0257] Similarly, suitable acidifying agents include methanesulfonic acid and / or 1-hydroxyethane-1,1-diphosphonic acid.

[0258] Among the group of the abovementioned sealing agents (b1) in the form of acidifying agents, sulfuric acid and / or acetic acid have proven to be particularly suitable.

[0259] In the context of a further particularly preferred embodiment, the method is characterized in that the agent (b) comprises as sealing reagent (b1) at least one acidifying agent selected from the group consisting of sulfuric acid, acetic acid and mixtures thereof.

[0260] The agent (b) comprises an acidifying agent as sealing agent (b1) in a cosmetic carrier, preferably an aqueous cosmetic carrier.

[0261] The acidifying agent contained in agent (b) influences the pH of agent (b), where it has been found that acidic pH values ​​also have a beneficial effect on the color strength and color fastness properties achievable in this manner.

[0262] For this reason, the agent (b) comprising an acidifying agent as sealing reagent (b1) preferably has a pH of 2.0 to 6.5, preferably 3.0 to 6.0, more preferably 4.0 to 6.0, very particularly preferably 4.5 to 5.5.

[0263] The pH measurement can be carried out using the usual methods known from the prior art, such as by glass electrode via combination electrode or by pH measurement via pH indicator paper.

[0264] In a further very particularly preferred embodiment, the method is characterized in that the agent (b) comprises an acidifying agent as sealing reagent (b1) and has a pH of 2.0 to 6.5, preferably 3.0 to 6.0, more preferably 4.0 to 6.0 and very particularly preferably 4.5 to 5.5.

[0265] pH values ​​within the meaning of the present invention are pH values ​​measured at a temperature of 22°C.

[0266] Further components in agents (a) and (b) The above agents (a) and (b) may contain one or more optional ingredients. However, it is essential for the present invention that at least one of the agents (a) and (b) further comprises at least one dyeing compound from the group consisting of pigments and / or direct dyes.

[0267] It may be preferable that the agent (a), in addition to at least one organosilicon compound (a1) selected from the group consisting of silanes having one, two or three silicon atoms, further comprises at least one dyeing compound selected from the group consisting of pigments and / or direct dyes.

[0268] Alternatively, it may be preferred that the agent (b) further comprises, in addition to the sealing agent (b1), at least one dyeing compound selected from the group consisting of pigments and / or direct dyes.

[0269] In an equally preferred embodiment of the method, agent (a) and agent (b) each further comprise at least one dyeing compound selected from the group consisting of pigments and / or direct dyes.

[0270] The use of pigments, irrespective of the agents (a) and / or (b), has proven to be particularly preferred in this context.

[0271] In another very particularly preferred embodiment, the method is characterized in that agent (a) and / or agent (b) further comprises at least one dyeing compound from the group of the pigments.

[0272] Pigments within the meaning of the present invention are understood to mean dye compounds having a solubility in water at 25°C of less than 0.5 g / L, preferably less than 0.1 g / L, more preferably less than 0.05 g / L. For example, to measure the solubility in water, the following method can be used: 0.5 g of pigment are weighed into a beaker. A stirring bar is added. Then 1 liter of distilled water is added. The mixture is heated to 25°C for 1 hour while stirring with a magnetic stirrer. If after this period undissolved components of the pigment are still visible in the mixture, the solubility of the pigment is less than 0.5 g / L. If the pigment-water mixture cannot be visually evaluated due to the high strength of the finely dispersed pigment, the mixture is filtered. If some of the undissolved pigment remains on the filter paper, the solubility of the pigment is less than 0.5 g / L.

[0273] Suitable colour pigments may be of inorganic and / or organic origin.

[0274] In a preferred embodiment, the method is characterized in that agent (a) and / or agent (b) further comprises at least one dyeing compound from the group of the inorganic and / or organic pigments.

[0275] Preferred pigments are selected from synthetic or natural inorganic pigments. Inorganic pigments of natural origin can be produced, for example, from chalk, ochre, umber, green earth, burnt sienna, or graphite. In addition, black pigments, such as black iron oxide, colored pigments, such as ultramarine or red iron oxide, and fluorescent or phosphorescent pigments can be used as inorganic colored pigments.

[0276] Particularly suitable are colored metal oxides, hydroxides and oxide hydrates, mixed-phase pigments, sulfur-containing silicates, silicates, metal sulfides, metal cyanide complexes, metal sulfates, chromates and / or molybdates. Particularly preferred pigments are black iron oxide (CI 77499), yellow iron oxide (CI 77492), red-brown iron oxide (CI 77491), manganese violet (CI 77742), ultramarine (sodium aluminum sulfosilicate, CI 77007, Pigment Blue 29), chromium oxide hydrate (CI 77289), iron blue (ferric ferrocyanide, CI 77510) and / or carmine (cochineal).

[0277] Likewise particularly preferred pigments are colored pearlescent pigments. These are usually based on mica and may be coated with one or more metal oxides. Micas are layered silicates. The most important representatives of these silicates are muscovite, phlogopite, paragonite, biotite, lepidolite and nacre. To produce pearlescent pigments in combination with metal oxides, mica, mainly muscovite or phlogopite, is coated with metal oxide.

[0278] A preferred method is therefore characterised in that agent (a) and / or agent (b) further comprises at least one dyeing compound selected from the group of pigments selected from the group of coloured metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulphides, metal cyanide complexes, metal sulphates, bronze pigments and / or coloured pigments based on natural or synthetic mica coated with at least one metal oxide and / or metal oxychloride.

[0279] In a further preferred embodiment, the method is characterized in that the agent (a) and / or the agent (b) comprise at least one dyeing compound from the group of pigments selected from pigments based on natural or synthetic mica coated with one or more metal oxides from the group titanium dioxide (CI 77891), black iron oxide (CI 77499), yellow iron oxide (CI 77492), red and / or brown iron oxide (CI 77491, CI 77499), manganese violet (CI 77742), ultramarine (sodium aluminum sulfosilicate, CI 77007, Pigment Blue 29), chromium oxide hydrate (CI 77289), chromium oxide (CI 77288) and / or iron blue (ferric ferrocyanide, CI 77510).

[0280] Other suitable pigments are based on platelet-shaped borosilicates coated with metal oxides. These are coated with, for example, tin oxide, iron oxide, silicon dioxide and / or titanium dioxide. Such borosilicate-based pigments are available, for example, under the name MIRAGE from Eckart or under the name Reflecks from BASF SE.

[0281] In a preferred embodiment, agent (a) is characterized in that it comprises at least one dye compound from the group of inorganic pigments selected from the group consisting of black iron oxide (CI 77499), yellow iron oxide (CI 77492), red iron oxide (CI 77491) and mixtures thereof.

[0282] Yellow iron oxide (or iron oxide yellow) is the name for FeO(OH) and is listed in the Color Index as CI Pigment Yellow 42.

[0283] Red iron oxide (or iron oxide red) is the name for Fe2O3 and is listed in the Color Index as CI Pigment Red 101. Depending on the particle size, red iron oxide pigments can be adjusted to have very yellow shades (small particle size) to very blue shades (coarse grain).

[0284] Black iron oxide (or iron oxide black) is listed in the Color Index as CI Pigment Black 11. Black iron oxide is ferromagnetic. Its chemical formula is commonly written as Fe3O4, but in reality it is a mixed crystal of Fe2O3 and FeO with an inverse spinel structure. Doping with chromium, copper, or manganese can produce even blacker pigments.

[0285] Brown-black iron oxide (or iron oxide brown) is not usually a defined pigment but rather refers to a mixture of yellow, red and / or black iron oxides.

[0286] Iron oxide pigments typically have a particle diameter in the range of 2000-4000 nm. For some applications, especially cosmetic purposes, it may be advantageous to use iron oxide pigments with a significantly smaller particle diameter. Thus, hair coloring with iron oxide pigments with a particle diameter in the range of 100-1000 nm, more preferably 150-700 nm, shows better durability and better gray hair coverage.

[0287] For this reason, even more preferred is an agent (a) which further comprises a dyeing compound from the group of the pigments and / or direct dyes, wherein the dyeing compound comprises a pigment from the group of the iron oxide pigments, said iron oxide pigment having a particle diameter in the range from 100 to 1000 nm, more preferably from 150 to 700 nm.

[0288] Examples of particularly suitable color pigments are those commercially available, for example under the trade names Rona®, Colorona®, Xirona®, Dichrona® and Timiron® from Merck, Ariabel® and Unipure® from Sensient, Prestige® or SynCrystal from Eckart Cosmetic Colors, Flamenco®, Cellini®, Cloisonne®, Duocrome®, Gemtone®, Timica®, MultiReflections, Chione from BASF SE, and Sunshine® from Sunstar.

[0289] Very particularly preferred pigments having the trade name Colorona® are, for example: Colorona Copper, Merck, Mica, CI 77491 (Iron Oxides) Colorona Copper Fine, Merck, Mica, CI 77491 (Iron Oxides) Colorona Passion Orange, Merck, Mica, CI 77491 (Iron Oxides), Alumina Colorona Patina Silver, Merck, Mica, CI 77499 (Iron Oxides), CI 77891 (Titanium Dioxide) Colorona RY, Merck, CI 77891 (Titanium Dioxide), Mica, CI 75470 (Carmine) Colorona Oriental Beige, Merck, Mica, CI 77891 (Titanium Dioxide), CI 77491 (Iron Oxides) Colorona Dark Blue, Merck, Mica, Titanium Dioxide, Ferric Ferrocyanide Colorona Chameleon, Merck, CI 77491 (iron oxide), mica Colorona Aborigine Amber, Merck, Mica, CI 77499 (Iron Oxides), CI 77891 (Titanium Dioxide) Colorona Blackstar Blue, Merck, CI 77499 (iron oxide), mica Colorona Patagonian Purple, Merck, Mica, CI 77491 (Iron Oxides), CI 77891 (Titanium Dioxide), CI 77510 (Ferric Ferrocyanide) Colorona Red Brown, Merck, Mica, CI 77491 (Iron Oxides), CI 77891 (Titanium Dioxide) Colorona Russet, Merck, CI 77491 (Titanium Dioxide), Mica, CI 77891 (Iron Oxides) Colorona Imperial Red, Merck, Mica, Titanium Dioxide (CI 77891), D&C RED NO.30 (CI 73360) Colorona Majestic Green, Merck, CI 77891 (titanium dioxide), mica, CI 77288 (chromium oxide green) Colorona Light Blue, Merck, Mica, Titanium Dioxide (CI 77891), Ferric Ferrocyanide (CI 77510) Colorona Red Gold, Merck, Mica, CI 77891 (Titanium Dioxide), CI 77491 (Iron Oxides) Colorona Gold Plus MP 25, Merck, Mica, Titanium Dioxide (CI 77891), Iron Oxide (CI 77491) Colorona Carmine Red, Merck, Mica, Titanium Dioxide, Carmine Colorona Blackstar Green, Merck, Mica, CI 77499 (Iron Oxides) Colorona Bordeaux, Merck, Mica, CI 77491 (Iron Oxides) Colorona Bronze, Merck, Mica, CI 77491 (Iron Oxides) Colorona Bronze Fine, Merck, Mica, CI 77491 (Iron Oxides) Colorona Fine Gold MP 20, Merck, Mica, CI 77891 (Titanium Dioxide), CI 77491 (Iron Oxides) Colorona Sienna Fine, Merck, CI 77491 (iron oxide), mica Colorona Sienna, Merck, Mica, CI 77491 (Iron Oxides) Colorona Precious Gold, Merck, Mica, CI 77891 (Titanium Dioxide), Silica, CI 77491 (Iron Oxides), Tin Oxide Colorona Sun Gold Sparkle MP 29, Merck, Mica, Titanium Dioxide, Iron Oxide, Mica, CI 77891, CI 77491(EU) Colorona Mica Black, Merck, CI 77499 (iron oxides), mica, CI 77891 (titanium dioxide) Colorona Bright Gold, Merck, Mica, CI 77891 (Titanium Dioxide), CI 77491 (Iron Oxides) Colorona Blackstar Gold, Merck, Mica, CI 77499 (Iron Oxides) Colorona SynCopper, Merck, synthetic fluorphlogopite (and) iron oxide Colorona SynBronze, Merck, synthetic fluorphlogopite (and) iron oxide It is.

[0290] Further particularly preferred pigments having the trade name Xirona® are, for example: Xirona Golden Sky, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide Xirona Caribbean Blue, Merck, Mica, CI 77891 (Titanium Dioxide), Silica, Tin Oxide Xirona Kiwi Rose, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide Xirona Magic Mauve, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide Xirona Le Rouge, Merck, Iron Oxide (and) Silica It is.

[0291] Particularly preferred pigments also have the trade name Unipure®, for example: Unipure Red LC 381 EM, Sensient CI 77491 (iron oxide), silica Unipure Black LC 989 EM, Sensient, CI 77499 (Iron Oxides), Silica Unipure Yellow LC 182 EM, Sensient, CI 77492 (iron oxide), silica It is.

[0292] Likewise particularly preferred pigments having the trade name Flamenco® are, for example: Flamenco® Summit Turquoise T30D, BASF, titanium dioxide (and) mica Flamenco® Super Violet 530Z, BASF, mica (and) titanium dioxide It is.

[0293] In the context of another embodiment, agent (a) and / or agent (b) used in the method may also contain one or more dyeing compounds from the group of the organic pigments.

[0294] The organic pigments are correspondingly insoluble organic dyes or colour lacquers and may be selected, for example, from the group of the nitroso, nitro, azo, xanthene, anthraquinone, isoindolinone, isoindoline, quinacridone, perinone, perylene, diketopyrrolopyorrole, indigo, thioindido, dioxazine and / or triarylmethane compounds.

[0295] Particularly suitable organic pigments are, for example, carmine, quinacridone, phthalocyanine, sorghum, blue pigments having the color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, or CI 74160, yellow pigments having the color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, or CI 47005, green pigments having the color index numbers CI 61565, CI 61570, or CI 74260, orange pigments having the color index numbers CI 11725, CI 15510, CI 45370, or CI 71105, red pigments having the color index numbers CI 12085, CI 12100, CI 12200, CI 12300, CI 12400, CI 12500, CI 12600, CI 12700, CI 12800, CI 12900, CI 23000, CI 23100, CI 23200, CI 23300, CI 23400, CI 23500, CI 23600, CI 23700, CI 23800, CI 23900, CI 24000, CI 24100, CI 24200, CI 24300, CI 24400, CI 24500, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915 and / or CI 75470.

[0296] In another particularly preferred embodiment, the method further comprises the step of: the agent (a) and / or the agent (b) being selected from the group consisting of carmine, quinacridone, phthalocyanine, sorghum, blue pigments having the Color Index Numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, or CI 74160, yellow pigments having the Color Index Numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, or CI 47005, green pigments having the Color Index Numbers CI 61565, CI 61570, or CI 74260, orange pigments having the Color Index Numbers CI 11725, CI 15510, CI 45370, or CI 71105, red ... 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915, CI 75470, and mixtures thereof.

[0297] The organic pigment may be a color lake. In the scope of the present invention, the term color lake means a particle that contains a layer of absorbed dye, the unit consisting of the particle and the dye being insoluble under the above-mentioned conditions. The particle may be, for example, an inorganic substrate, such as aluminum, silica, calcium borosilicate, calcium aluminum borosilicate, or aluminum.

[0298] For example, Alizarin color lake can be used as the color lake.

[0299] In the context of another embodiment of the method, agent (a) and / or agent (b) can also comprise one or more dyeing compounds from the group of the organic pigments.

[0300] In another particularly preferred embodiment, the method further comprises the step of: the agent (a) and / or the agent (b) being selected from the group consisting of carmine, quinacridone, phthalocyanine, sorghum, blue pigments having the Color Index Numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, or CI 74160, yellow pigments having the Color Index Numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, or CI 47005, green pigments having the Color Index Numbers CI 61565, CI 61570, or CI 74260, orange pigments having the Color Index Numbers CI 11725, CI 15510, CI 45370, or CI 71105, red ... 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915, and / or CI 75470.

[0301] Likewise suitable dye compounds from the group of pigments are inorganic and / or organic pigments modified with a polymer, which can, for example, increase the affinity of the pigment for the respective substance of at least one layer.

[0302] It is also possible to use so-called metallic effect pigments as dyeing compounds in agent (a) and / or agent (b).

[0303] The metal effect pigments may in particular comprise pigments based on lamellar substrate platelets, pigments based on lenticular substrate platelets and / or pigments based on substrate platelets, including vacuum metallized pigments (VMP). In these metal effect pigments, the substrate platelet comprises a metal, preferably aluminum, or an alloy. Metal effect pigments based on metal substrate platelets preferably have a coating which functions, inter alia, as a protective layer.

[0304] Suitable metallic effect pigments include, for example, Alegrace® Marvelous, Alegrace® Gorgeous or Alegrace® Aurous pigments manufactured by Schlenk Metallic Pigments.

[0305] Likewise suitable metallic effect pigments are the aluminium-based pigments of Eckart's SILVERDREAM series, and the aluminium- or copper / zinc-containing metal alloy-based pigments of the VISIONAIRE series.

[0306] Due to their excellent light and temperature stability, it is very particularly preferred to use the abovementioned pigments in agent (a) and / or agent (b). It is even more preferred if the pigment used has a certain particle size, which on the one hand results in a uniform distribution of the pigment in the formed polymer film and on the other hand avoids a feeling of roughness on the hair or skin after application of the cosmetic product. Thus, according to the invention, the at least one pigment has an average particle size D of 1 to 50 μm, preferably 5 to 45 μm, preferably 10 to 40 μm, in particular 14 to 30 μm. 50 It is advantageous if the average particle size D 50 can be measured, for example, using dynamic light scattering (DLS).

[0307] In a further preferred embodiment, the method is characterized in that agent (a) further contains one or more dyeing compounds in the form of pigments in a total amount of 0.01 to 10% by weight, preferably 0.1 to 8% by weight, more preferably 0.2 to 6% by weight, most preferably 0.5 to 4.5% by weight, relative to the total weight of agent (a).

[0308] In a further likewise preferred embodiment, the method is characterized in that agent (b) further comprises one or more dye compounds in the form of pigments in a total amount of 0.01 to 10% by weight, preferably 0.1 to 8% by weight, more preferably 0.2 to 6% by weight and most particularly preferably 0.5 to 4.5% by weight, relative to the total weight of agent (b).

[0309] The agent (a) and / or the agent (b) used in the method may contain one or more direct dyes as dyeing compounds. Direct dyes are dyes that bond directly to the hair and do not require an oxidative process for color formation. Direct dyes are usually nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinones, triarylmethane dyes or indophenols.

[0310] Direct dyes within the meaning of the present invention are those which have a water solubility of more than 0.5 g / L at 25° C. (760 mmHg) and are therefore not considered pigments. Direct dyes within the meaning of the present invention preferably have a water solubility of more than 1 g / L at 25° C. (760 mmHg).

[0311] Direct dyes can be divided into anionic direct dyes, cationic direct dyes and non-ionic direct dyes.

[0312] In a further preferred embodiment, the method is characterized in that agent (a) and / or agent (b) further comprises at least one anionic direct dye, cationic direct dye and / or non-ionic direct dye as dyeing compound.

[0313] In a further preferred embodiment, the method is characterized in that agent (a) and / or agent (b) further comprise at least one dyeing compound selected from the group of anionic direct dyes, nonionic direct dyes and / or cationic direct dyes.

[0314] Suitable cationic direct dyes are, for example, Basic Blue 7, Basic Blue 26, Basic Violet 2 and Basic Violet 14, Basic Yellow 57, Basic Red 76, Basic Blue 16, Basic Blue 347 (Cationic Blue 347 / Dystar), HC Blue No. 16, Basic Blue 99, Basic Brown 16, Basic Brown 17, Basic Yellow 57, Basic Yellow 87, Basic Orange 31, Basic Red 51, Basic Red 76.

[0315] In particular, nonionic direct dyes that can be used are nonionic nitro and quinone dyes and neutral azo dyes. Suitable nonionic direct dyes are those designated by the international designations or trade names HC Yellow 2, HC Yellow 4, HC Yellow 5, HC Yellow 6, HC Yellow 12, HC Orange 1, Disperse Orange 3, HC Red 1, HC Red 3, HC Red 10, HC Red 11, HC Red 13, HC Red BN, HC Blue 2, HC Blue 11, HC Blue 12, Disperse Blue 3, HC Violet 1, Disperse Violet 1, Disperse Violet 4, Disperse Black 9, as well as 1,4-diamino-2-nitrobenzene, 2-amino-4-nitrophenol, 1,4-bis-(2-hydroxyethyl)-amino-2-nitrobenzene, 3-nitro-4-(2-hydroxyethyl)-aminophenol 2-(2 1-(2'-ureidoethyl)amino-4-nitrobenzene, 2-[(4-amino-2-nitrophenyl)amino]benzoic acid, 6-nitro-1,2,3,4-tetrahydroquinoxaline, 2-hydroxy-1,4-naphthoquinone, picramic acid and its salts, 2-amino-6-chloro-4-nitrophenol, 4-ethylamino-3-nitrobenzoic acid and 2-chloro-6-ethylamino-4-nitrophenol are known compounds.

[0316] In the course of the research which has led to the present invention, it has been found that in particular agent (a) and / or agent (b) which comprises at least one anionic direct dye make it possible to produce colorations of particularly high colour strength.

[0317] Thus, in an obviously very particularly preferred embodiment, the method is characterized in that agent (a) and / or agent (b) further comprises at least one anionic direct dye as dye compound.

[0318] Anionic direct dyes are also called acid dyes. By acid dyes we mean direct dyes that have at least one carboxylic acid group (-COOH) and / or one sulfonic acid group (-SO3H). Depending on the pH, the protonated form of the carboxylic acid or sulfonic acid group (-COOH, -SO3H) can be converted into its deprotonated form (-COO - , -SO3 - ) in equilibrium with the protonated form. The proportion of the protonated form increases with decreasing pH. When direct dyes are used in the form of their salts, the carboxylic or sulfonic acid groups are present in deprotonated form and are neutralized with the corresponding stoichiometric equivalent of cation to maintain electrical neutrality. Acid dyes can also be used in the form of their sodium and / or potassium salts.

[0319] Acid dyes within the meaning of the present invention are those that have a solubility in water at 25° C. (760 mmHg) of more than 0.5 g / L and are therefore not considered pigments. Acid dyes within the meaning of the present invention preferably have a solubility in water at 25° C. (760 mmHg) of more than 1 g / L.

[0320] The alkaline earth (e.g. calcium and magnesium) or aluminum salts of acid dyes often have lower solubilities than the corresponding alkali salts. If the solubility of these salts is less than 0.5 g / L (25°C, 760 mmHg), they are not included in the definition of direct dyes.

[0321] An essential feature of acid dyes is the ability to form an anionic charge, whereby the carboxylic or sulfonic acid group responsible for this is usually linked to different chromophore systems, suitable chromophore systems being found, for example, in the structures of nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinone dyes, triarylmethane dyes, xanthene dyes, rhodamine dyes, oxazine dyes and / or indophenol dyes.

[0322] Thus, in the context of one embodiment, the method for dyeing keratin materials is preferably characterized in that agent (a) and / or agent (b) further comprises, as dyeing compound, at least one anionic direct dye selected from the group of nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinone dyes, triarylmethane dyes, xanthene dyes, rhodamine dyes, oxazine dyes and / or indophenol dyes, each dye from the above groups comprising at least one carboxylic acid group (-COOH), sodium carboxylate group (-COONa), potassium carboxylate group (-COOK), sulfonic acid group (-SOH), sodium sulfonate group (-SONa) and / or potassium sulfonate group (-SOK).

[0323] For example, one or more compounds from the following groups can be selected as particularly well suited acid dyes: Acid Yellow 1 (D&C Yellow 7, Citronin A, Ext. D&C Yellow No. 7, Japan Yellow 403, CI 10316, COLIPA n° B001), Acid Yellow 3 (COLIPA n°: C 54, D&C Yellow N o 10, Quinoline Yellow, E104, Food Yellow No. 13, Acid Yellow 9 (CI 13015), Acid Yellow 17 (CI 18965), Acid Yellow 23 (COLIPA n o C 29, Covacap Jaune W 1100 (LCW), Sicovit Tartrazine 85 E 102 (BASF), Tartrazine, Food Yellow No. 4, Japan Yellow 4, FD&C Yellow No. 5, Acid Yellow 36 (CI 13065), Acid Yellow 121 (CI 18690), Acid Orange 6 (CI 14270), Acid Orange 7 (2-Naphthol orange, Orange II, CI 15510, D&C Orange 4, COLIPA n oC015), Acid Orange 10 (CI 16230; Orange G sodium salt), Acid Orange 11 (CI 45370), Acid Orange 15 (CI 50120), Acid Orange 20 (CI 14600), Acid Orange 24 (BROWN 1; CI 20170; KATSU201; nosodium salt; Brown No. 201; RESORCIN BROWN; Acid Orange 24; Japan Brown 201; D&C Brown No. 1), Acid Red 14 (CI 14720), Acid Red 18 (E124, Red 18; CI 16255), Acid Red 27 (E 123, CI 16185, C-Rot 46, Echtrot D, FD&C Red Nr. 2, Food Red No. 9, Naphtholrot S), Acid Red 33 (Red 33, Fuchsia Red, D&C Red 33, CI 17200), Acid Red 35 (CI CI 18065), Acid Red 51 (CI 45430, Pyrosin B, Tetraiodoflorecein, Eosin J, Iodeosin), Acid Red 52 (CI 45100, Food Red No. 106, Solar Rhodamine B, Acid Rhodamine B, Red n o 106 Pontacyl Brilliant Pink), Acid Red 73 (CI 27290), Acid Red 87 (Eosin, CI 45380), Acid Red 92 (COLIPA n o C53, CI 45410), Acid Red 95 (CI 45425, Erythtosine, Simacid Erythrosine Y), Acid Red 184 (CI 15685), Acid Red 195, Acid Violet 43 (Jarocol Violet 43, Ext. D&C Violet n o 2, CI 60730, COLIPA n oC063), Acid Violet 49 (CI 42640), Acid Violet 50 (CI 50325), Acid Blue 1 (Patent Blue, CI 42045), Acid Blue 3 (Patent Blue V, CI 42051), Acid Blue 7 (CI 42080), Acid Blue 104 (CI 42735), Acid Blue 9 (E 133, Patent Blue AE, Amido blue AE, Erioglaucin A, CI 42090, CI Food Blue No. 2), Acid Blue 62 (CI 62045), Acid Blue 74 (E 132, CI 73015), Acid Blue 80 (CI 61585), Acid Green 3 (CI 42085, Food Green No. 1), Acid Green 5 (CI 42095), Acid Green 9 (CI 42100), Acid Green 22 (CI 42170), Acid Green 25 (CI 61570, Japan Green 201, D&C Green No. 5), Acid Green 50 (Brilliant Acid Green BS, CI 44090, Acid Brilliant Green BS, E 142), Acid Black 1 (Black n o 401, Naphthalene Black 10B, Amido Black 10B, CI 20470, COLIPA n o B15), Acid Black 52 (CI 15711), Food Yellow No. 8 (CI 14270), Food Blue No. 5, D&C Yellow 8, D&C Green 5, D&C Orange 10, D&C Orange 11, D&C Red 21, D&C Red 27, D&C Red 33, D&C Violet 2 and / or D&C Brown 1.

[0324] For example, the solubility of an anionic direct dye in water can be measured as follows: 0.1 g of anionic direct dye is placed in a beaker. A stir bar is added. Then 100 ml of water is added. The mixture is heated to 25° C. while stirring with a magnetic stirrer. The mixture is stirred for 60 minutes. The aqueous mixture is then visually evaluated. If there is still undissolved residue, the amount of water is increased, for example by 10 ml increments. Water is added until the amount of dye used is completely dissolved. If the dye-water mixture cannot be visually evaluated due to the high strength of the dye, the mixture is filtered. If some undissolved dye remains on the filter paper, the solubility test is repeated with a larger amount of water. If 0.1 g of anionic direct dye dissolves in 100 ml of water at 25° C., the solubility of the dye is 1 g / L.

[0325] Acid Yellow 1 is called 8-hydroxy-5,7-dinitro-2-naphthalenesulfonic acid, disodium salt, and has a solubility in water of at least 40 g / L (25°C).

[0326] Acid Yellow 3 is a mixture of the sodium salts of monosulfonic acid and disulfonic acid of 2-(2-quinolyl)-1H-indene-1,3(2H)-dione, and has a solubility in water of 20 g / L (25° C.).

[0327] Acid Yellow 9 is the disodium salt of 8-hydroxy-5,7-dinitro-2-naphthalenesulfonic acid, and its solubility in water is greater than 40 g / L (25°C).

[0328] Acid Yellow 23 is the trisodium salt of 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-((4-sulfophenyl)azo)-1H-pyrazole-3-carboxylic acid and is very soluble in water at 25°C.

[0329] Acid Orange 7 is the sodium salt of 4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonic acid. Its solubility in water is greater than 7 g / L at 25 °C.

[0330] Acid Red 18 is the trisodium salt of 7-hydroxy-8-[(E)-(4-sulfonato-1-naphthyl)-diazenyl)]-1,3-naphthalenedisulfonic acid and has a very high solubility in water, greater than 20% by weight.

[0331] Acid Red 33 is the disodium salt of 5-amino-4-hydroxy-3-(phenylazo)-naphthalene-2,7-disulfonic acid and has a solubility in water of 2.5 g / L (25° C.).

[0332] Acid Red 92 is the disodium salt of 3,4,5,6-tetrachloro-2-(1,4,5,8-tetrabromo-6-hydroxy-3-oxoxanthen-9-yl)benzoic acid and its solubility in water has been shown to be greater than 10 g / L (25° C.).

[0333] Acid Blue 9 is the disodium salt of 2-({4-[N-ethyl(3-sulfonatobenzyl]amino]phenyl}{4-[(N-ethyl(3-sulfonatobenzyl)imino]-2,5-cyclohexadien-1-ylidene}methyl)-benzenesulfonic acid, and has a solubility in water of more than 20% by weight (25°C).

[0334] Thus, a highly preferred method is wherein the agent (a) and / or the agent (b) is selected from the group consisting of Acid Yellow 1, Acid Yellow 3, Acid Yellow 9, Acid Yellow 17, Acid Yellow 23, Acid Yellow 36, Acid Yellow 121, Acid Orange 6, Acid Orange 7, Acid Orange 10, Acid Orange 11, Acid Orange 15, Acid Orange 20, Acid Orange 24, Acid Red 14, Acid Red, Acid Red 27, Acid Red 33, Acid Red 35, Acid Red 51, Acid Red 52, Acid Red 73, Acid Red 87, Acid Red 92, Acid Red 95, Acid Red 184, Acid Red 195, Acid Violet 43, Acid Bio Red 49, Acid Violet 50, Acid Blue 1, Acid Blue 3, Acid Blue 7, Acid Blue 104, Acid Blue 9, Acid Blue 62, Acid Blue 74, Acid Blue 80, Acid Green 3, Acid Green 5, Acid Green 9, Acid Green 22, Acid Green 25, Acid Green 50, Acid Black 1, Acid Black 52, Food Yellow No. 8, Food Blue No. 5, D&C Yellow 8, D&C Green 5, D&C Orange 10, D&C Orange 11, D&C Red 21, D&C Red 27, D&C Red 33, D&C Violet 2 and / or D&C Brown 1.

[0335] The direct dyes, in particular the anionic direct dyes, can be used in various amounts in the agents (a) and / or (b) depending on the desired color strength. Particularly good results have been obtained when the agents (a) and / or (b) contain one or more direct dyes as dyeing compounds in a total amount of 0.01 to 10% by weight, preferably 0.1 to 8% by weight, more preferably 0.2 to 6% by weight, most particularly preferably 0.5 to 4.5% by weight, in each case relative to the total weight of said agents.

[0336] In a further preferred embodiment, the method is characterized in that agent (a) and / or agent (b) further comprises one or more direct dyes as dyeing compounds in a total amount of 0.01 to 10% by weight, preferably 0.1 to 8% by weight, more preferably 0.2 to 6% by weight and most particularly preferably 0.5 to 4.5% by weight, based on the total weight of agent (a) and / or agent (b).

[0337] Preferred embodiments of the method relating to the staining compound are disclosed below: 1. The following steps: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes containing 1, 2 or 3 silicon atoms; at least one dyeing compound comprising at least one inorganic pigment selected from the group of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments and mixtures thereof; applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0338] 2. The following steps: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and at least one dyeing compound comprising at least one inorganic pigment selected from the group of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments and mixtures thereof, and at least one pigment selected from the group consisting of layered metal substrate platelet based pigments, lenticular metal substrate platelet based pigments, metal substrate platelet based pigments including "vacuum metallized pigments" (VMPs), and mixtures thereof; applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0339] 3. The following steps: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and at least one dyeing compound comprising at least one inorganic pigment selected from the group of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments and mixtures thereof, and at least one pigment comprising α) a substrate platelet comprising mica, and β) a coating comprising at least one first metal oxide (hydrate) layer comprising TiO2, SnO2 and / or iron oxide, applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0340] 4. The following steps: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and at least one dyeing compound comprising at least one inorganic pigment selected from the group of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments and mixtures thereof; applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent comprising a film-forming polymer and at least one dyeing compound comprising at least one pigment selected from the group consisting of layered metal substrate platelet-based pigments, lenticular metal substrate platelet-based pigments, metal substrate platelet-based pigments including "vacuum metallized pigments" (VMPs), and mixtures thereof; 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0341] 5. The following steps: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and at least one dyeing compound comprising at least one inorganic pigment selected from the group of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments and mixtures thereof; applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent comprising a film-forming polymer, and at least one dyeing compound comprising a pigment comprising α) a substrate platelet comprising mica and β) a coating comprising at least one first metal oxide (hydrate) layer comprising TiO2, SnO2 and / or iron oxide. 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0342] 6. The following steps: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and at least one dyeing compound comprising at least one inorganic pigment selected from the group of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments and mixtures thereof; applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent comprising a film-forming polymer, and at least one dyeing compound comprising a pigment comprising α) a substrate platelet comprising borosilicate glass and β) a coating comprising at least one first metal oxide (hydrate) layer comprising TiO2, SnO2, SiO2 and / or iron oxide. 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0343] 7. The following steps: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and Carmine, quinacridone, phthalocyanine, sorghum, blue pigments with color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with color index numbers CI 61565, CI 61570, CI 74260, orange pigments with color index numbers CI 11725, CI 15510, CI 45370, CI 71105, color index numbers CI 12085, CI 12120, CI at least one dyeing compound comprising at least one organic pigment selected from the group consisting of red pigments having CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915, CI 75470, and mixtures thereof; applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0344] 8. The following steps: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and Carmine, quinacridone, phthalocyanine, sorghum, blue pigments with color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with color index numbers CI 61565, CI 61570, CI 74260, orange pigments with color index numbers CI 11725, CI 15510, CI 45370, CI 71105, color index numbers CI 12085, CI 12120, CI at least one dyeing compound comprising at least one organic pigment selected from the group consisting of red pigments having CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915, CI 75470, and mixtures thereof; and at least one pigment selected from the group consisting of layered metal substrate platelet based pigments, lenticular metal substrate platelet based pigments, metal substrate platelet based pigments including "vacuum metallized pigments" (VMPs), and mixtures thereof; applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0345] 9. The following process: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and Carmine, quinacridone, phthalocyanine, sorghum, blue pigments with color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with color index numbers CI 61565, CI 61570, CI 74260, orange pigments with color index numbers CI 11725, CI 15510, CI 45370, CI 71105, color index numbers CI 12085, CI 12120, CI at least one dyeing compound comprising at least one organic pigment selected from the group consisting of red pigments having CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915, CI 75470 and mixtures thereof, and at least one pigment comprising α) a substrate platelet comprising mica and β) a coating comprising at least one first metal oxide (hydrate) layer comprising TiO2, SnO2 and / or iron oxide, applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0346] 10. The following steps: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and Carmine, quinacridone, phthalocyanine, sorghum, blue pigments with color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with color index numbers CI 61565, CI 61570, CI 74260, orange pigments with color index numbers CI 11725, CI 15510, CI 45370, CI 71105, color index numbers CI 12085, CI 12120, CI at least one dyeing compound comprising at least one organic pigment selected from the group consisting of red pigments having CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915, CI 75470, and mixtures thereof; applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent comprising a film-forming polymer, and at least one dyeing compound comprising at least one pigment selected from the group consisting of layered metal substrate platelet-based pigments, lenticular metal substrate platelet-based pigments, metal substrate platelet-based pigments including "vacuum metallized pigments" (VMPs), and mixtures thereof; 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0347] 11. The following process: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and Carmine, quinacridone, phthalocyanine, sorghum, blue pigments with color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with color index numbers CI 61565, CI 61570, CI 74260, orange pigments with color index numbers CI 11725, CI 15510, CI 45370, CI 71105, color index numbers CI 12085, CI 12120, CI at least one dyeing compound comprising at least one organic pigment selected from the group consisting of red pigments having CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915, CI 75470, and mixtures thereof; applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent comprising a film-forming polymer and at least one dyeing compound comprising α) a substrate platelet comprising mica and β) at least one pigment comprising a coating comprising at least one first metal oxide (hydrate) layer comprising TiO2, SnO2 and / or iron oxide; 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0348] 12. The following process: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and Carmine, quinacridone, phthalocyanine, sorghum, blue pigments with color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with color index numbers CI 61565, CI 61570, CI 74260, orange pigments with color index numbers CI 11725, CI 15510, CI 45370, CI 71105, color index numbers CI 12085, CI 12120, CI at least one dyeing compound comprising at least one organic pigment selected from the group consisting of red pigments having CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915, CI 75470, and mixtures thereof; applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent comprising a film-forming polymer and at least one dyeing compound comprising a pigment comprising α) a substrate platelet comprising borosilicate glass and β) a coating comprising at least one first metal oxide (hydrate) layer comprising TiO2, SnO2, SiO2 and / or iron oxide; 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0349] 13. The following process: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes containing 1, 2 or 3 silicon atoms; at least one dyeing compound from the group of direct dyes containing a pigment and / or a pigment from the group of iron oxide pigments, said iron oxide pigment having a particle size in the range of 100 to 1000 nm, more preferably 150 to 700 nm, applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0350] 14. The following process: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes containing 1, 2 or 3 silicon atoms; at least one dyeing compound from the group of direct dyes comprising a pigment and / or a pigment from the group of iron oxide pigments, said iron oxide pigment having a particle size in the range of 100 to 1000 nm, more preferably 150 to 700 nm, and at least one pigment selected from the group consisting of pigments based on layered metal substrate platelets, pigments based on lenticular metal substrate platelets, pigments based on metal substrate platelets including "vacuum metallized pigments" (VMP), and mixtures thereof, applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0351] 15. The following process: applying an agent (v) to the keratin material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes containing 1, 2 or 3 silicon atoms; at least one dyeing compound from the group of direct dyes containing a pigment and / or a pigment from the group of iron oxide pigments, said iron oxide pigment having a particle size in the range of 100 to 1000 nm, more preferably 150 to 700 nm, applying an agent (b) to keratinous materials, said agent (b) comprising: (b1) at least one sealing agent comprising a film-forming polymer and at least one dyeing compound from the group of direct dyes comprising pigments and / or at least one pigment selected from the group consisting of pigments based on layered metal substrate platelets, pigments based on lenticular metal substrate platelets, pigments based on metal substrate platelets including "vacuum metallized pigments" (VMPs), and mixtures thereof; 1. A method for dyeing keratinous materials, particularly human hair, comprising:

[0352] The agent may also comprise one or more surfactants. The term active agent is understood to mean a surface-active substance. A distinction is made between anionic surfactants, which consist of a hydrophobic group and a negatively charged hydrophilic head group, amphoteric surfactants, which carry both a negative charge and a countervailing positive charge, cationic surfactants, which have a positively charged hydrophilic group in addition to a hydrophobic group, and nonionic surfactants, which have no charge but have a strong dipole moment and are strongly hydrated in aqueous solution.

[0353] The term "zwitterionic surfactant" refers to a surfactant that contains at least one quaternary ammonium group and at least one -COO (-) or -SO3 (-) It refers to surface-active compounds having a group. Particularly suitable zwitterionic surfactants are the so-called betaines, such as N-alkyl-N,N-dimethylammonium-glycinates, such as cocoalkyldimethylammonium glycinate, N-acylaminopropyl-N,N-dimethylammonium glycinates, such as cocoacylaminopropyldimethylammonium glycinate, and 2-alkyl-3-carboxymethyl-3-hydroxyethylimidazolines, in each case having 8 to 18 carbon atoms in the alkyl or acyl group, and cocoacylaminoethyl hydroxyethyl carboxymethyl glycinate. A preferred zwitterionic surfactant is a fatty acid amide derivative known under the INCI name cocamidopropyl betaine.

[0354] Amphoteric surfactants are C8-C 24It means a surface-active compound which contains, in addition to an alkyl or acyl group, at least one free amino group and at least one -COOH or -SO3H group and can form an inner salt. Examples of suitable amphoteric surfactants are N-alkylglycines, N-alkylpropionic acids, N-alkylaminobutyric acids, N-alkyliminodipropionic acids, N-hydroxyethyl-N-alkylamidopropylglycines, N-alkyltaurines, N-alkylsarcosines, 2-alkylaminopropionic acids and alkylaminoacetic acids, each having about 8 to 24 C atoms in the alkyl group. Typical examples of amphoteric or zwitterionic surfactants are alkylbetaines, alkylamidobetaines, aminopropionates, aminoglycinates, imidazolinium betaines and sulfobetaines.

[0355] Particularly preferred amphoteric surfactants are N-coco-alkylaminopropionates, coco-acylaminoethylaminopropionates and C 12 -C 18 It is an acylsarcosine.

[0356] The agent may also contain at least one nonionic surfactant. Suitable nonionic surfactants are alkyl polyglycosides and alkylene oxide addition products to fatty alcohols and fatty acids, in each case with 2 to 30 mol of ethylene oxide per mol of fatty alcohol or fatty acid. Preparations with suitable properties are also obtained if they contain, as nonionic surfactants, fatty acid esters of ethoxylated glycerin reacted with at least 2 mol of ethylene oxide. Particularly preferred nonionic surfactants are alkyl polyglycosides, in particular alkyl polyglycosides.

[0357] Furthermore, the agent may also contain at least one cationic surfactant. Cationic surfactants are understood to mean surfactants, i.e. surface-active compounds, each of which has one or more positive charges. Cationic surfactants contain only positive charges. Usually, such surfactants are composed of a hydrophobic part and a hydrophilic head group, the hydrophobic part usually consisting of a hydrocarbon backbone (e.g. consisting of one or two linear or branched alkyl chains) and the positive charge is located in the hydrophilic head group. Examples of cationic surfactants are: quaternary ammonium compounds which may have one or two alkyl chains with a chain length of 8 to 28 C atoms as hydrophobic functional groups, quaternary phosphonium salts substituted with one or more alkyl chains having a chain length of 8 to 28 C atoms, or Tertiary sulfonium salts It is.

[0358] Furthermore, the cationic charge can also be part of a heterocycle in the form of an onium structure (for example an imidazolium or pyridinium ring). In addition to the functional part carrying the cationic charge, the cationic surfactants can also contain further uncharged functional groups, as for example in the case of esterquats. The cationic surfactants are used in a total amount of 0.1 to 45% by weight, preferably 1 to 30% by weight, very particularly preferably 1 to 15% by weight, based on the total weight of the respective agent.

[0359] Furthermore, the agent may also contain at least one anionic surfactant. Anionic surfactants are surfactants that have only an anionic charge (neutralized by the corresponding counter cation). Examples of anionic surfactants are fatty acids, alkyl sulfates, alkyl ether sulfates and ether carboxylic acids with 12-20 C atoms in the alkyl group and up to 16 glycol ether groups in the molecule.

[0360] The anionic surfactants are used in a total amount of 0.1 to 45% by weight, preferably 1 to 30% by weight and very particularly preferably 1 to 15% by weight, based on the total weight of the respective agent.

[0361] Agent (a) and / or agent (b) may further comprise a matting agent.

[0362] Suitable matting agents include, for example, (modified) starch, wax, talc and / or (modified) silicic acid. The amount of matting agent is preferably between 0.1 and 10% by weight, based on the total amount of agent (a) or agent (b). Preferably, agent (a) comprises a matting agent.

[0363] Agent (a) and / or agent (b) may also comprise a thickening agent.

[0364] When using agents (a) and / or (b), they must not be so thin that they drip off the keratinous material, for this reason it may be preferred that agents (a) and / or (b) further contain a thickening agent.

[0365] Therefore, in the context of one embodiment, a method for dyeing keratinous materials is preferred, characterized in that agent (a) and / or agent (b) further comprises a thickener.

[0366] The agent may contain other active ingredients, auxiliaries and additives, such as solvents, fatty ingredients, e.g. C8-C 30 Fatty acid triglycerides, C8-C 30 Fatty acid monoglycerides, C8-C 30fatty acid diglycerides and / or hydrocarbons; structuring agents, such as glucose, maleic acid and lactic acid, hair conditioning compounds, such as phospholipids, e.g. lecithin and cephalins; perfume oils, dimethyl isosorbide and cyclodextrin; fibre structure improving active agents, in particular mono-, di- and oligosaccharides, such as glucose, galactose, fructose and lactose; dyes for colouring the products; antidandruff active ingredients, such as piroctone olamine, zinc omadine and climbazole; amino acids and oligopeptides; animal and / or vegetable protein hydrolysates, as well as their fatty acid condensation products or optionally in the form of anionic or cationically modified derivatives; vegetable oils; light stabilizers and UV blockers; active ingredients, such as panthenol, pantothenic acid, pantolactone, allantoin, pyrrolidinone carboxylic acid and its salts, and bisabolol; polyphenosulfones. may also include oleic acids, in particular hydroxycinnamic acids, 6,7-dihydroxycoumarins, hydroxybenzoic acids, catechins, tannins, leucoanthocyanidins, anthocyanidins, flavanones, flavones and flavonols; ceramides or pseudoceramides; vitamins, provitamins and vitamin precursors; plant extracts; fats and waxes, such as fatty alcohols, beeswax, montan wax and paraffin; swelling and penetrating agents, such as glycerol, propylene glycol monoethyl ether, carbonates, bicarbonates, guanidine, urea and primary, secondary and tertiary phosphates; opacifying agents, such as latex, styrene / PVP and styrene / acrylamide copolymers; pearlescent agents, such as ethylene glycol mono- and distearate and PEG-3-distearate; and foaming agents, such as propane-butane mixtures, N2O, dimethyl ether, CO2 and air.

[0367] The selection of these additional substances is made by those skilled in the art according to the desired properties of the agent. Regarding other optional ingredients and the amounts of such ingredients used, explicit reference is made to the relevant manuals known to those skilled in the art. The additional active ingredients and auxiliary substances are preferably always used in the preparations according to the invention in an amount of 0.0001-25% by weight, in particular 0.0005-15% by weight, based on the total weight of the particular agent.

[0368] Methods for dyeing keratinous materials In the context of the method according to the invention, the agents (v), (a) and (b) are applied to keratinous materials, in particular human hair. Thus, the agents (v), (a) and (b) are ready-to-use agents. The agents (v), (a) and (b) are different from each other.

[0369] In principle, agents (a) and (b) can be applied simultaneously or successively, preferably successively, and agent (v) is applied before agents (a) and (b).

[0370] The best results could be obtained when agent (v) was first applied to the keratinous material in a first step, agent (a) was applied to the keratinous material in a second step, and agent (b) was applied in a third step.

[0371] Very particular preference is therefore given to a method for treating keratinous materials, in particular for dyeing human hair, which comprises the following steps in the indicated order: 1. In a first step, applying an agent (v) to a keratinous material, said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; 2. In a second step, applying an agent (a) to the keratin material, said agent (a) comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and 3. In a third step, applying an agent (b) to the keratin material, said agent (b) comprising: (b1) at least one sealing reagent; Here, at least one of the agents (a) and (b) further contains at least one dyeing compound from the group consisting of pigments and / or direct dyes.

[0372] In order to impart high wash resistance to the dyed keratinous materials over a long period of time, the agents (v), (a) and (b) are particularly preferably used within the same dyeing process, which means that there is a period of up to several hours between the application of agents (v) and (b).

[0373] In the context of a further particularly preferred embodiment, the method is characterized in that agent (v) is applied first, then agent (a) and thereafter agent (b), the time between application of agents (v) and (b) being at most 24 hours, preferably at most 12 hours, particularly preferably at most 6 hours.

[0374] The agent (a) is characterized in that it contains at least one reactive organosilicon compound (a1), which is involved in an oligomerization or polymerization reaction and in this way becomes functionalized as soon as it comes into contact with the hair surface. In a second step of the method, a second agent (b) is applied to the hair. During the application of agent (b), which comprises at least one film-forming polymer as sealing agent (b1), it interacts with the silane film and binds to the keratinous material. During the application of agent (b), which comprises at least one alkalizing or acidifying agent as sealing agent (b1), the formation of the silane film is positively influenced. The desired coloring of the keratinous material is brought about by the dyeing compounds in agent (a) and / or agent (b). The coloring can be obtained by a colored silane film (the dyeing compound is contained only in agent (a)), by a colored polymer film (the dyeing compound is contained only in agent (b) which comprises a film-forming polymer as sealing agent (b1)), or by a colored silane film and a colored polymer film (agents (a) and (b) each comprise at least one dyeing compound and agent (b) comprises a film-forming polymer as sealing agent (b1)).

[0375] In the context of further embodiments, a method is most particularly preferred which comprises the following steps in the indicated order: (1) applying agent (v) to a keratin material; (2) allowing agent (v) to act for a period of 1 to 60 minutes, preferably 2 to 25 minutes; (3) optionally rinsing the keratinous material with water; (4) applying agent (a) to keratinous materials; (5) allowing agent (a) to act for a period of 10 seconds to 30 minutes, preferably 30 seconds to 15 minutes; (6) optionally rinsing the keratinous material with water; (7) applying agent (b) to the keratin material; (8) allowing agent (b) to act for a period of 30 seconds to 30 minutes, preferably 30 seconds to 10 minutes; (9) The keratinous material is washed away with water.

[0376] Rinsing the keratinous materials with water in steps (3), (6) and (9) of the method is understood according to the present invention to mean that only water is used in the rinsing step, without any additional agents different from agents (v), (a) and (b).

[0377] In step (1), agent (v) is first applied to keratinous materials, in particular human hair.

[0378] After application, the agent (v) is allowed to act on the keratinous materials. In this context, application times to the hair of 1 minute to 60 minutes, preferably 2 minutes to 25 minutes, very particularly preferably 10 minutes to 20 minutes, have proven to be particularly advantageous.

[0379] In the context of a particularly preferred embodiment of the method according to the invention, agent (v) is rinsed off from the keratin materials before agent (a) is applied to the hair in the next step.

[0380] In step (4), agent (a) is applied to keratinous materials, in particular human hair.

[0381] After application, the agent (a) is allowed to act on the keratinous materials. In this context, application times to the hair of 10 seconds to 30 minutes, preferably 20 seconds to 20 minutes, very particularly preferably 30 seconds to 15 minutes, have proven to be particularly advantageous.

[0382] In the context of a preferred embodiment of the method, agent (a) can be washed off from the keratin materials before agent (b) is applied to the hair in a subsequent step.

[0383] When agent (b) was applied to keratinous materials to which agent (a) was still applied, colorations were obtained which likewise had good washfastness.

[0384] In step (7), agent (b) is applied to the keratinous material. After application, agent (b) is allowed to act on the hair.

[0385] Even with short application times of agent (b), this process makes it possible to produce colorations with particularly good strength and washing fastness. Application times to the hair of 10 seconds to 10 minutes, preferably 20 seconds to 5 minutes, very particularly preferably 30 seconds to 3 minutes, have proven to be particularly advantageous.

[0386] In step (9), agent (b) (and optionally agent (a) if still present) is washed from the keratinous material with water.

[0387] In the context of this embodiment, the sequence of steps (1) to (9) is preferably carried out within 24 hours.

[0388] Agent (a) contains, together with the organosilicon compounds, certain highly reactive compounds which, when applied, can undergo hydrolysis or oligomerization and / or polymerization. As a result of their high reactivity, these organosilicon compounds form a film on the keratinous materials.

[0389] It is highly advantageous for the user to prepare the ready-to-use agent (a) only immediately prior to application, in order to avoid premature oligomerization or polymerization.

[0390] In the context of a further embodiment, a method is preferred which comprises the following steps in the order given: (1) applying an agent (a) to a keratinous material, said agent (a) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; (2) A step of producing agent (a) by mixing the first agent (a') and the second agent (a''), The first agent (a') comprises at least one organosilicon compound (a1) from the group of silanes having 1, 2 or 3 silicon atoms; The second agent (a″) comprises water and, optionally, at least one dyeing compound from the group of pigments and / or direct dyes; (3) applying agent (a) to keratinous materials; (4) allowing agent (a) to act for a period of 10 seconds to 30 minutes, preferably 30 seconds to 15 minutes; (5) optionally rinsing the keratinous material with water; (6) applying agent (b) to the keratin material; (7) allowing agent (b) to act for a period of 30 seconds to 30 minutes, preferably 30 seconds to 10 minutes; (8) The keratinous material is washed away with water.

[0391] In order to be able to provide a preparation that is as stable as possible, the agent (a') itself is preferably prepared so as to have low moisture content or to be anhydrous.

[0392] In a preferred embodiment, the method is characterized in that the agent (a') has a water content of 0.001 to 10% by weight, preferably 0.5 to 9% by weight, more preferably 1 to 8% by weight and very particularly preferably 1.5 to 7% by weight, relative to the total weight of agent (a').

[0393] The agent (a') may further comprise a thickening agent.

[0394] In a preferred embodiment, the method is characterized in that the agent (a''') has a water content of 15 to 99.9% by weight, preferably 35 to 99% by weight, more preferably 55 to 99% by weight, even more preferably 65 to 99% by weight and very particularly preferably 75 to 99% by weight, based on the total weight of the agent (a'').

[0395] Within this embodiment, the ready-to-use agent (a) is prepared by mixing agents (a') and (a'').

[0396] For example, the user can first stir or shake the agent (a') containing the organosilicon compound (a1) and the agent (a'') containing water. The user can apply this mixture of (a') and (a'') to the keratin material immediately after preparation or after a short reaction time of 10 seconds to 20 minutes. The user can then apply the agent (b) as described above.

[0397] It may be preferred to also use in the process an agent (a''') which comprises at least one dyeing compound from the group of the pigments and / or direct dyes.

[0398] In the context of a further embodiment, a method is particularly preferred which comprises the following steps in the given order: (1) applying an agent (a) to a keratinous material, said agent (a) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; (2) allowing agent (v) to act for a period of 1 to 60 minutes, preferably 2 to 25 minutes; (3) optionally rinsing the keratinous material with water; (4) A step of producing agent (a) by mixing the first agent (a'), the second agent (a'') and the third agent (a'''), the first agent (a') comprises at least one organosilicon compound (a1) from the group of silanes having 1, 2 or 3 silicon atoms, The second agent (a'') contains water, the third agent (a''') comprises at least one dyeing compound from the group of pigments and / or direct dyes, (5) applying agent (a) to keratinous materials; (6) allowing agent (a) to act for a period of 10 seconds to 30 minutes, preferably 30 seconds to 15 minutes; (7) optionally rinsing the keratinous material with water; (8) applying agent (b) to the keratin material; (9) allowing agent (b) to act for a period of 30 seconds to 30 minutes, preferably 30 seconds to 10 minutes; (10) The keratinous material is washed away with water.

[0399] Within this embodiment, the ready-to-use agent (a) is prepared by mixing agents (a'), (a'') and (a''').

[0400] For example, the user can first stir or shake the agent (a') containing the organosilicon compound (a1) with the agent (a'') containing water, and then stir or shake with the agent (a''') containing at least one dyeing compound. The user can apply this mixture of (a'), (a'') and (a''') to the keratin material immediately after preparation or after a short reaction time of 10 seconds to 20 minutes. The user can then apply agent (b) as described above.

[0401] For example, the user can first stir or shake the agent (a''') containing at least one dye compound with the agent (a'') containing water, and then stir or shake with the agent (a') containing the organosilicon compound (a1). The user can apply this mixture of (a'), (a'') and (a''') to the keratin material immediately after preparation or after a short reaction time of 10 seconds to 20 minutes. The user can then apply agent (b) as described above.

[0402] The ready-to-use agent (b), especially if it comprises at least one dyeing compound, can also be prepared immediately before application of the agent (b). In this case, the ready-to-use agent (b) is prepared, for example, by mixing agents (b') and (b'').

[0403] For example, the user can stir or shake an agent (b') containing the sealing agent (b1) and an agent (b'') containing at least one dyeing compound. The user can apply this mixture of (b') and (b'') to the keratin material immediately after preparation or after a short reaction time of 10 seconds to 20 minutes.

[0404] At least one dyeing compound from the group of pigments and direct dyes is preferably used in the form of a pigment suspension, which comprises at least one dyeing compound and a liquid carrier medium. The carrier medium is preferably non-aqueous. The carrier medium can comprise, for example, silicone oil. Similarly, the agents (a) and (b), in addition to the two essential components (a1) and (b1) and at least one dyeing compound, respectively, can further comprise a liquid carrier medium in each case.

[0405] Multi-component packaging unit (kit of parts) For convenience of use, it is preferred that the user be provided with all the required agents in the form of a multi-component packaged unit (kit of parts).

[0406] A second subject of the invention is therefore a multi-component packaging unit (kit-of-parts) for dyeing keratinous materials, comprising, packaged separately from one another, the following: a first container containing an agent (v), said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; a second container containing an agent (a'), said agent (a') comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and a third container containing an agent (a″), said agent (a″) comprising: Water, and a fourth container containing an agent (b), said agent (b) comprising: (b1) at least one sealing agent (wherein components (a1) and (b1) are disclosed in detail above, and at least one of the agents (a) and (b) further contains at least one dyeing compound from the group consisting of pigments and / or direct dyes).

[0407] A preferred embodiment comprises a multi-component packaged unit (kit-of-parts) for dyeing keratinous materials, comprising, packaged separately from one another, the following: a first container containing an agent (v), said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; a second container containing an agent (a'), said agent (a') comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, and a third container containing an agent (a″), said agent (a″) comprising: Water, and a fourth container containing an agent (a'''), said agent (a''') comprising: At least one dyeing compound from the group of pigments and / or direct dyes a fifth container containing agent (b), said agent (b) comprising: (b1) at least one sealing agent (wherein components (v1), (v2), (v3), (a1) and (b1) are disclosed in detail above).

[0408] Preferred in the context of another embodiment is a multi-component packaged unit (kit of parts) for dyeing keratinous materials, comprising, packaged separately from one another, the following: a first container containing an agent (v), said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; a second container containing an agent (a'), said agent (a') comprising: at least one organosilicon compound (a1) from the group of silanes containing 1, 2 or 3 silicon atoms, and a third container containing an agent (a″), said agent (a″) comprising: water and at least one dyeing compound from the group of pigments and / or direct dyes, a fourth container containing an agent (b), said agent (b) comprising: (b1) at least one sealing agent (wherein components (v1), (v2), (v3), (a1) and (b1) are disclosed in detail above).

[0409] Preferred in the context of yet another embodiment is a multi-component packaged unit (kit of parts) for dyeing keratinous materials, comprising, packaged separately from one another, the following: a first container containing an agent (v), said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; a second container containing an agent (a'), said agent (a') comprising: at least one organosilicon compound (a1) from the group of silanes containing 1, 2 or 3 silicon atoms, and a third container containing an agent (a″), said agent (a″) comprising: at least one dyeing compound from the group of the pigments and / or direct dyes, and a fourth container containing an agent (b), said agent (b) comprising: (b1) at least one sealing agent (wherein components (v1), (v2), (v3), (a1) and (b1) are disclosed in detail above).

[0410] Preferred in the context of another embodiment is a multi-component packaged unit (kit of parts) for dyeing keratinous materials, comprising, packaged separately from one another, the following: a first container containing an agent (v), said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; a second container containing an agent (a'), said agent (a') comprising: at least one organosilicon compound (a1) from the group of silanes containing 1, 2 or 3 silicon atoms, and a third container containing an agent (a″), said agent (a″) comprising: Water, and a fourth container containing an agent (b), said agent (b) comprising: (b1) at least one sealing agent comprising a film-forming polymer and furthermore a dyeing compound from the group of pigments and / or direct dyes (wherein components (v1), (v2), (v3), (a1) and (b1) are disclosed in detail above).

[0411] Preferred in the context of yet another embodiment is a multi-component packaged unit (kit of parts) for dyeing keratinous materials, comprising, packaged separately from one another, the following: a first container containing an agent (v), said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; a second container containing an agent (a'), said agent (a') comprising: at least one organosilicon compound (a1) from the group of silanes containing 1, 2 or 3 silicon atoms, and a third container containing an agent (a″), said agent (a″) comprising: water, a fourth container containing an agent (a'''), said agent (a''') comprising: At least one dyeing compound from the group of pigments and / or direct dyes a fifth container containing an agent (b'), said agent (b') comprising: (b1) at least one sealing agent comprising a film-forming polymer; and a sixth container containing an agent (b″), said agent (b″) comprising: At least one dyeing compound from the group of pigments and / or direct dyes (wherein components (v1), (v2), (v3), (a1) and (b1) are disclosed in detail above).

[0412] Preferred in the context of yet another embodiment is a multi-component packaged unit (kit of parts) for dyeing keratinous materials, comprising, packaged separately from one another, the following: a first container containing an agent (v), said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol; (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing agent; a second container containing an agent (a'), said agent (a') comprising: at least one organosilicon compound (a1) from the group of silanes containing 1, 2 or 3 silicon atoms, and a third container containing an agent (a″), said agent (a″) comprising: water, a fourth container containing an agent (b'), said agent (b') comprising: (b1) at least one sealing agent comprising a film-forming polymer; and a fifth container containing an agent (b″), said agent (b″) comprising: At least one dyeing compound from the group of pigments and / or direct dyes (wherein components (v1), (v2), (v3), (a1) and (b1) are disclosed in detail above).

[0413] With regard to the further preferred embodiments of the multi-component packaging unit, what has been said with regard to the method applies mutatis mutandis. EXAMPLES

[0414] The following formulations were prepared (all values ​​are weight % of active material unless otherwise stated):

[0415] [Table 1]

[0416] The pH of the two pretreatment agents (vI) and (v-II) was 15 and 15.2.

[0417] [Table 2]

[0418] [Table 3]

[0419] [Table 4]

[0420] Ready-to-use agent (a) was prepared by mixing 5 g of agent (a'), 5 g of agent (a'') and 15 g of agent (a''). The pH of agent (a) was adjusted to 10.5 by adding ammonia or lactic acid.

[0421] [Table 5]

[0422] First, 2 g of pretreatment agent (vI) or (v-II) per 1 g of hair strand was rubbed into hair strands (Kerling, white Euronaturhaar) and left to act at room temperature for 1 minute, and then each pretreatment agent was rinsed off with water.

[0423] Agent (a) was then massaged into each hair strand and left to act for 10 minutes. The strands were then rinsed with water.

[0424] Agent (b) was then applied to the hair strands and left to act for 3 minutes, and was also rinsed off with water.

[0425] In both cases the wash fastness of the colouring was significantly higher than that of the strands not pretreated with the alkaline pretreatment agent (v).

Claims

1. The following steps: - A step of applying agent (v) to a keratin substance, wherein the agent (v) is (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing reagent included; - A step of applying agent (a) to a keratin substance, wherein the agent (a) is (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms included; - A step of applying agent (b) to a keratin substance, wherein the agent (b) is (b1) at least one sealing reagent included, a method for dyeing a keratin substance, particularly human hair, wherein at least one of the agents (a) and (b) further comprises at least one dyeing compound from the group consisting of pigments and / or direct dyes.

2. The agent (a) is of formula (I): 【Chemical 1】 [wherein, ・R １ and R ２ are, independently of each other, a hydrogen atom or a C １ -C ６ alkyl group, - L represents a linear or branched divalent C １ - C ２０ alkylene group, ・R ３ and R ４ are, independently of each other, C １ -C ６ represents an alkyl group, - a represents an integer from 1 to 3, and - b represents an integer of 3 - a] and / or includes at least one organosilicon compound (a1) of (II), formula (II): 【Chemical 2】 in the organosilicon compound of ·R ５ 、R ５ ’, R ５ ’’, R ６ 、R ６ ’ and R ６ ’’ are, independently of each other, C １ -C ６ alkyl groups, - A, A', A'', A''' and A'''' are, independently of one another, a linear or branched divalent C １ - C ２０ alkylene group, and ·R ７ and R ８ are, independently of each other, a hydrogen atom, C １ -C ６ alkyl group, hydroxy C １ -C ６ alkyl group, C ２ -C ６ alkenyl group, amino C １ -C ６ alkyl group, or formula (III): [Chemical Formula 3] represents the group of, - c represents an integer from 1 to 3, - d represents an integer of 3 - c, - c' represents an integer from 1 to 3, - d' represents an integer of 3 - c', - c'' represents an integer from 1 to 3, - d'' represents an integer of 3 - c'', - e represents 0 or 1, - f represents 0 or 1, - g represents 0 or 1, - h represents 0 or 1 (provided that at least one of e, f, g and h is different from 0), the method according to claim 1.

3. The agent (a) is of formula (I): 【Chemical Formula 4】 [wherein, ・R １ and R ２ both represent a hydrogen atom, - L represents a linear divalent C １ - C ６ alkylene group, preferably a propylene group (-CH ２ - CH ２ - CH ２ -), or an ethylene group (-CH ２ - CH ２ -), and ・R ３ and R ４ each independently represents a methyl group or an ethyl group, - a represents the numerical value 3, - b represents the numerical value 0] including at least one organosilicon compound (a1) thereof, the method according to claim 1 or 2.

4. The agent (a) is - (3 - aminopropyl)triethoxysilane - (3 - aminopropyl)trimethoxysilane - 1 - (3 - aminopropyl)silanetriol - (2 - aminoethyl)triethoxysilane - (2 - aminoethyl)trimethoxysilane - 1 - (2 - aminoethyl)silanetriol - (3 - dimethylaminopropyl)triethoxysilane - (3 - dimethylaminopropyl)trimethoxysilane - 1 - (3 - dimethylaminopropyl)silanetriol ・ (2-Dimethylaminoethyl)triethoxysilane ・ (2-Dimethylaminoethyl)trimethoxysilane, and / or ・ 1-(2-Dimethylaminoethyl)silanetriol The method according to claim 1, characterized by comprising at least one organosilicon compound (a1) of formula (I) selected from the group consisting of

5. The agent (a) is of formula (II): 【Chemical Formula 5】 [wherein, ・ e and f both represent the number 1, ・ g and g both represent the number 0, - A and A' are, independently of each other, linear divalent C １ - C ６ representing an alkylene group, ・R ７ represents a hydrogen atom, a methyl group, a 2-hydroxyethyl group, a 2-alkenyl group, a 2-aminoethyl group, or a group of formula (III)] The method according to claim 1, characterized by comprising at least one organosilicon compound (a1) of

6. The agent (a) is of formula (IV): 【Chemical Formula 6】 [wherein, - R ９ represents a C １ - C １８ alkyl group, ・R １０ represents a hydrogen atom or a C １ -C ６ alkyl group, ・R １１ represents a C １ -C ６ alkyl group, ・ k represents an integer from 1 to 3, ・ m represents the integer 3 - k] The method according to claim 1, characterized by comprising at least one organosilicon compound (a1) of

7. The agent (a) is ・ Methyltrimethoxysilane ・ Methyltriethoxysilane ・ Ethyltrimethoxysilane ・ Ethyltriethoxysilane ・ Propyltrimethoxysilane ・ Propyltriethoxysilane ・ Hexyltrimethoxysilane ・ Hexyltriethoxysilane ・ Octyltrimethoxysilane ・ Octyltriethoxysilane ・ Dodecyltrimethoxysilane ・ Dodecyltriethoxysilane ・ Octadecyltrimethoxysilane ・ Octadecyltriethoxysilane, and ・ Mixtures thereof The method according to claim 1, characterized by comprising at least one organosilicon compound (a1) of formula (IV) selected from the group consisting of

8. The method according to claim 1, characterized in that the agent (a) comprises at least two structurally different organosilicon compounds (a1).

9. The sealing reagent according to claim 1, characterized by comprising a compound selected from the group consisting of a film-forming polymer, an alkalizing agent, an acidifying agent, and mixtures thereof.

10. The method according to claim 1, characterized in that the at least one polyethylene glycol (v1) having an average molecular weight of 200 - 8000 g / mol comprises a polyethylene glycol having an average molecular weight of 200 - 600 g / mol.

11. The method according to claim 1, characterized in that the aliphatic alcohol (v2) comprises ethanol.

12. The method according to claim 1, wherein the alkalizing reagent (v3) comprises an alkali metal hydroxide, particularly potassium hydroxide.

13. The method according to claim 1, wherein the dyeing compound from the group of pigments and / or direct dyes comprises an inorganic pigment selected from the group consisting of iron(III) oxide black (CI 77499), iron(III) oxide yellow (CI 77492), iron(III) oxide red (CI 77491) and mixtures thereof.

14. Individually packaged from one another, the following: - A first container containing agent (v), said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol, (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing reagent, - A second container containing agent (a'), said agent (a') comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms, - A third container containing agent (a''), said agent (a'') comprising: Water, and at least one dyeing compound from the group of pigments and / or direct dyes and - A fourth container containing agent (b), said agent (b) comprising: (b1) at least one sealing reagent A multi-component packaging unit (kit of parts) for dyeing keratinous substances.

15. Individually packaged from one another, the following: - A first container containing agent (v), said agent (v) comprising: (v1) at least one polyethylene glycol having an average molecular weight of 200 to 8000 g / mol, (v2) at least one aliphatic alcohol, and (v3) at least one alkalizing reagent, - A second container containing agent (a'), said agent (a') comprising: (a1) at least one organosilicon compound from the group of silanes having 1, 2 or 3 silicon atoms - A third container containing agent (a''), said agent (a'') comprising: Water - A fourth container containing agent (a'''), said agent (a''') comprising: at least one dyeing compound from the group of pigments and / or direct dyes - A fifth container containing agent (b), said agent (b) comprising: (b1) at least one sealing reagent A multi-component packaging unit (kit of parts) for dyeing keratinous substances.

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